Note: This is a random selection of cheats and help I found online. I tested most of them but some of these cheats only work with different Addons....try it out.
General: 
Open Cheat Console: During gameplay press [ctrl]+[shift]+C to open the cheat console and type the following to turn cheats on:
testingcheatsenabled - testing cheats on objects
[If you have Vista and you can not get the bar to show you need to press Ctrl Alt Windows (should be next to ALT button) and C all at once. Then you may enter any cheat you want]
After enabling the test cheats, you can use any of these cheats:
help - Display most cheats
Kaching - 1,000 more Simoleons
Motherlode - 50,000 more Simoleons
shazaam - +2,500 lifetime happiness points to active Sim placeFriezes on/off - turns the foundations into friezes that can be placed above groundlevel
freerealestate - Ignore the cost when buying a lot
modify traits - Set or clear traits
add to household - Add active Sim to current household
set age [number] - Set age of the Sim
edit in cas - Take the Sim back to Create-a-Sim
set career [career/level] - Give selected Sim a career
force opportunity - Click career building you work at to force an opportunity
force event - Click career building you work at to force an event
force all events - Click career building to display all events for the career consecutively
force service sim [name] - Force a specific service Sim to appear
force visitor - Forces a neighbor to show up
make me know everyone - Selected Sim knows every other Sim
make friends for me - Make several random friends for selected Sim
make happy - Sets all mood/moodlets for everyone in the house to perfect; removes negative moodlets
make motives [static or dynamic] - Set motives static or dynamic for entire household
unlockOutfits [on or off] - View career outfits and service uniforms [* 1]
moveObjects [on or off] - No limitations for placing/moving objects
resetSim [first name] [last name] - Return Sims to safe and neutral state at home
constrainFloorElevation [true or false] - Force terrain adjustments regardless of objects, Sims, and other structures
disableSnappingToSlotsOnAlt [on or off] - Objects will not snap to slots while holding [Alt]
fadeObjects [on or off] - Objects fade when camera gets close to them
snapObjectsToAngle [true or false] - Toggle 45 degree angle object snap
snapObjectsToGrid [true or false] - Toggle snap to grid for placed objects
hideHeadlineEffects [on or off] - Show talk/thought balloons above Sim's head
jokePlease - Print random joke to console
enablellamas [on or off] - Llamas enabled message
slowMotionViz: [0-8] - Slow motion visuals; 0 is normal, 8 is slowest
testingCheatsenabled [true or false] - Enable testing cheats [* 2]
fps [on or off] - Toggle framerate display at top right
fullscreen [on or off] - Full screen
quit - Quit the game
* 1: This code must be enabled before entering Create-A-Sim mode.
*2: You can move your Sims' status bars as desired by clicking and dragging (hygiene, energy, fun, etc.).
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New clothes 			
 				To get new clothes, you first have to buy a dresser from "Buy  Options". Once there, click "Plan Outfit." You can put a total of three  different clothes for each type (formal, every day, athletic, etc.).
Clean Dishes 			
 				Too lazy to take the time to clean up dishes? Just drag the empty  plate in to the Sims inventory  and then drag to sell. You won't make  any money but if your Sim doesn't have a dish washer, its fast and  efficient.
 			     			   			    
 			   			   			
 			 		  			 				Gender of Babies 			
You must have a pregnant female
Eating apples will increase your chances of having boys!
(i.e. 3 apples = 3 boys)
On the other hand, eating watermelons will increase your chances of having girls!
(i.e. 3 watermelons = 3 girls)
**To have increased chances of twins or triplets have one or both parents have the lifetime reward of fertility treatment.
No guarantee for this!
 			     			   			    
Easy Money
 			Eating apples will increase your chances of having boys!
(i.e. 3 apples = 3 boys)
On the other hand, eating watermelons will increase your chances of having girls!
(i.e. 3 watermelons = 3 girls)
**To have increased chances of twins or triplets have one or both parents have the lifetime reward of fertility treatment.
No guarantee for this!
Easy Money
 				Start writing novels on your computer. Write fiction novels as they  take the least amount of time. They will not bring you too much  Simoleons. When you write, your skill will automatically advance. If  your skill is high enough, you will be able to write more novel  types/genres. The most money can be made from "Romance Novels". You will  get royalties for six weeks once you finish a book. With the "Writing"  skill maxed out, you can make approximately 40,000 Simoleons every week,  which is more than the 34,800 Simoleons you can get by purchasing all  neighborhood businesses, and takes less time to achieve. In three game  weeks you should have a very high speed writing, 9 or 10 novels as best  sellers, and 100,000 Simoleons.
Making Friends 			
 				Buy a guitar. Play it to learn how to play guitar. Keep playing  until you reach 5/10 level, which gives you the ability to "Play For  Tips". When you have that ability, go to the park with the guitar in  your inventory. When you are in the park, click the guitar in your  inventory, and select "Play For Tips." People watching you will become  your friends if you keep playing. The higher your guitar skill, the  faster they will become friends with you.
Change Name 			
If you're unhappy with the name of your sim you can change the name  of your sim by going to map view and clicking on City Hall and clicking  the option 'Change Name'. You can only change your name from 12:00pm and  6:00pm.
 			     			   			    
 			   			   			
 			 		  			 				Have a Ghost Baby (Without Killing) 			
 				How to do it: 
- Set one of your Sim's traits to Kleptomaniac (Sim must be female)
- Go to graveyard
- Wait until Sim steals remains or tell Sim to swipe something (remains must be male)
- On the second day since stealing grave and putting it in home, the ghost will appear at 11:00pm and disappear at 4:00am it will appear every other day
- Socialize with ghost every night it appears until you are at best friend ghost will then begin appearing every night
- get fertility reward
- Confess attraction to ghost
- ask to snuggle on bed, kiss
- Try for baby every night until you start throwing up
- Congrats! You're now having a ghost's baby! (It will be born as a ghost that you can control)
- Set one of your Sim's traits to Kleptomaniac (Sim must be female)
- Go to graveyard
- Wait until Sim steals remains or tell Sim to swipe something (remains must be male)
- On the second day since stealing grave and putting it in home, the ghost will appear at 11:00pm and disappear at 4:00am it will appear every other day
- Socialize with ghost every night it appears until you are at best friend ghost will then begin appearing every night
- get fertility reward
- Confess attraction to ghost
- ask to snuggle on bed, kiss
- Try for baby every night until you start throwing up
- Congrats! You're now having a ghost's baby! (It will be born as a ghost that you can control)
Protection From Death 			
 				Go to Pleasant Rest Graveyard, and near the gate, there is a strange  bush called a "Death Flower Bush" - Harvest the flower from it.  
If you keep this flower in your Sim's inventory, when you die the grim reaper will trade it for a second chance at life.
This flower will not reappear, but there are Unknown Special Seeds (requires level 7 Gardening to plant) dotted about near the graveyard (and a few other places) which may grow another Death Flower (and sometimes more if your Sim has the Green Thumb trait to revive the plant.)
 			     			   			    
If you keep this flower in your Sim's inventory, when you die the grim reaper will trade it for a second chance at life.
This flower will not reappear, but there are Unknown Special Seeds (requires level 7 Gardening to plant) dotted about near the graveyard (and a few other places) which may grow another Death Flower (and sometimes more if your Sim has the Green Thumb trait to revive the plant.)
Turn off Aging 			
 				In the options menu you can choose the gameplay settings. When you  uncheck the box before "Aging" the sims won't become older anymore. You  can also slow aging down in this menu by setting the lifetime bar. It's  changeable from 25 days too 960 days.  				Age Sims Prematurely 				 			
Buy a birthday cake even before you Sims birthday and have them blow  out the candles and they will age when they blow them out
 			  			   			    
Static Needs
Static Needs
Once the TestingCheatsEnabled True code has been activated, you can shift-click on the mailbox outside of your sims' house to fill their needs bars using the 'Make all happy' option and freeze them with 'Make Motives Static.'
 				5 STAR CELEB 				 			
 				Even if you aren't choosing the celebrity lifestyle, you can use this cheat to get 5*
Type in TestingCheatsEnabled true
then shift + click your mailbox
click 'make me friends' and your celeb stars go up straight away!
then shift + click your mailbox
click 'make me friends' and your celeb stars go up straight away!
 				Hording Pizza 				 			
Have a Sim call for pizza. When the pizza  delivery man arrives, do not accept the pizza. The delivery man will  eventually leave the pizza on the front porch, and it will never get  stale. You can stack as many pizzas there as you want. If your Sims get  hungry, just tell them to get a pizza from the front porch.
 			  			   			    
 			   			   			
				 		 			 				Get free police car 				 			
After testingcheatsenabled true has been entered, when you click on  the mailbox, it will say set career, click on law enforcement and become  a spy, it will give you a police cruiser in your sims invetory, then,  you can just quit the job!
 			  			   			    
Force Twins
Force Twins
 				first enter testingcheatsenabled true. then click on a pregnant sim. Then do ctrl+shift+c and type in: forcetwins
 			   			   			
				 		 			 				Make your neighbor your housemate 				 			
 				hit: ctrl alt c. type: testingcheatsenabled true. invite anybody  from the neighborhood u like(or dislike) shift click on that sim and  'add to family'
Workout Without Getting Fatigued 				 			
You must have testing cheats enabled by typing [testingcheatsenabled  true] without brackets. Once you have entered that cheat go to your  mailbox out front of your house and Shift click on the mailbox. A number  of options will appear and one of those option will say need static.  Click this and then go to anywhere u wish to do a workout. This cheat  will allow you to workout continuously without fatigue.
 			  			   			    
Buydebug
Buydebug
Enable testingcheatsenabled true, then type "buydebug". Go into buy mode and press the  2nd tab, the sorted one, to see a detailed tab with a ? on it.
There you find all the special stuff.
 			   			   			
				 		 			There you find all the special stuff.
 				Buy/Build on Already Functioning Community Lots 				 			
 				Normally you are not able to but/build on community lots, but there  is a way around that. Press Ctrl-Alt C and enter testingcheatsenabled  true, right-click on the floor and you have the option to Buy/Build on  this lot, along with teleportation. You can redecorate or demolish that  lot. Using this cheat with The Sims 3 World Adventures Expansion Pack,  you can see hidden traps and chambers and even enter them by deleting  the walls or sealed doors without going through lengthy missions!
 				Teleportation 				 			
 				Press Ctrl+Shift+C to open up the console type in TestingCheatsEnabled True, now click shift and click on a place to walk and it should say teleport me here.
 
 			   			   			
				 		 			 				Trait Modification 				 			
 				Once testingcheatsenabled true has been activated, if you  hold the "Shift" key while clicking your active Sim. An option appears  were you can edit your Sims traits.Houshold Funds
I often get tired of entering the "motherlode" cheat countless times. An easier way to increase your households funds is this: hit Ctrl+Shift+C and the cheat box should appear. enter the cheat "familyfunds*space* *space*
Example: familyfunds miller 3000000
Return Sim to CAS
Not happy how your Sim looks like and what you created? Return that poor guy to the Create a Sim page and change what you don't like.
Type testingcheatsenabled true , then click on your Sim. A new option appears: Edit Sim in Create a Sim , click on it and make your Sim happy with a new nose, mouth whatever you do not like.
*works with Generations-addon only*
*will be continued*
 
