A little plug now for something I discovered a while ago but failed to mention.
A lot of the time, or most of the time, people go to the forums to ask questions- how to do this that or the other in the game. Usually this provides good results, but there are quicker and easier ways to find the info you seek. Such as this:
I came across this site whilst looking for help regarding how to build a Simbot, and boy was it useful. It has all sorts of information, from the basics- such as how to actually play the game- to some of the more involved aspect of gameplay- like completing lifetime wishes.
The site even has a review of Barnacle Bay, in-depth guides for each of the expansion packs, a FAQ section which provides answers to a lot of technical questions, and a forum.
Happy knowledge getting!