Resources

Mods
Mod The Sims--THE website for mods and cc.
NRaas Industries--This is the home of Twallan, creator of the awesomely wonderful Story Progression, Master Controller, and Woohooer mods, among others.

Custom Content
Anubis Under the Sun--I've gotten many a fabulous hairstyle hairstyle from Anubis
Savio's Stuff--It's not been updated lately, but there's lot of great hair here
Kitty Klan--This is one of my favorite websites for clothes
Club Crimsyn--Nifty stuff here
All About Style--Beautiful clothes here. And historical clothes as well!
Garden of Shadows
Imaginarium of Green

Sim Info
Carl's Sims 3 Guide and Walkthrough--Everything you ever wanted or needed to know about The Sims--and more!