This page will help you to find information regarding The Sims 2. Programmers looking for file formats should start with the Programming Info page, and those looking for more information on Modding Tools should start there.
Where to start?
If you know what area you are interested in, check the following sections:
Walls & Floors
Whatever the hell else you want here
About the Tutorials
All tutorials here are ranked into different levels, which indicate it's difficult scale: