Weekly Matchup Breakdown: a nice site that compares each team in various statistical categories for each upcoming week. They update their stats very quickly after Sunday.
NFL Weather: self-explanatory.
CBS Rapid Reports: quick hits on team news/transactions as they happen.
Chad Millmen Podcasts: Chad covers all things betting on ESPN Insider, but his weekly podcasts are free to download. He has some great guests on to cover the NFL.
Pregame.com: one of the better all-around sites you'll find for info. They offer a myriad of goodies.
Sagarin Ratings: controversial statistical "power rankings" of teams. Personally, I don't use them, but I do check them out to see how he's doing. Some find them more useful than others.
SBR Betting Tools: a great place to find everything from free spreadsheets to odds converters.
Statistician Modeling: this is a blog with a different approach to handicapping. He relies mainly on statistics to make his picks and waits a few weeks until enough data has been compiled before he utilizes his system (not a bad idea at all). Every handicapper has their own method and this is one example worth checking out.
Football Outsiders: these guys take statistical analysis to a whole other level. They have a lot of useful information, but use your own discretion about what is valuable and what is not.
SBRforum: not just a site I write for, but a good place that offers a wide range of services. They have free picks, previews, an active forum, free contests/prizes, and all the latest info on sportsbooks and the industry.
Free Risk Intelligence Test: ever wondered just how well you assess and manage risk? This free test will give you an idea and should shed some light on your strengths/weaknesses/patterns.
Pinnacle Pulse Articles: some of these articles go back a few years, but you will find some great information here regarding all things handicapping.
Wunderdog Articles: there are some valuable articles here regarding the 101's of handicapping including critical advice about money management. Well worth the time.
Hilton Contest: this link is currently dead because it's the offseason, but once the season starts up you can track how the Sharps are doing in the yearly Vegas showdown.
Public Betting Tracker: this is just one example of public tracking, but if you're wondering what most people are doing week in and week out, find one of these trackers to follow. They have them at Pregame.com, SBRforum. com, and various other sites.
This isn't an exhaustive list of useful links, but they are all free and cover a bit of everything. I'll continue to add to it during the year.