I've found that the consumer advice that Clark Howard offers is excellent. There are a variety of ways to access his information -- through his popular radio show, HLN, and his web site. The web site is great for browsing -- one of my favorite area's to browse is the "RIp-off Alerts" section. The web site is easy to use and information is sorted by category. There is also a search function that works (I've visited a lot of sites where doing a search is not at all helpful).
Can't find the information you need. The Consumer Action Center allows you to Ask Team Clark your questions. This is a free service offered by Clark, his staff, and volunteers.