If you live in Texas, you can get free legal advice on several issues at TexasLawHelp.Org.
AARP overs a series of FAQ-type articles, as well.
The American Bar Association has a pretty map of the entire country (yes, even Puerto Rico is included) where you can click and find free legal advice that pertains to your state's jurisdiction.
The California Courts have a nice overview of free legal services as well as practical advice that may pertain to more than Californians (e.g., "Solve a Problem Without Going to Court").
There's a lot of info over at LawGuru.Com, too - where lawyers answer questions and those answers are then compiled into categories (bankruptcy law, adoption law, etc.) with search capabilities.