There is a lot of information to wade through when trying to learn more about betting on the National Football League (NFL).
Fortunately for people that want to learn, the NFL is the most covered league in America, and there are statistics and data about it everywhere.
The internet has many useful websites to find accurate information about the NFL. The NFL site (NFL.com) is updated constantly, and has so much valuable information about the league. ESPN (ESPN.com) is another. Both sites have year-round coverage of the league. If statistics are what you are looking for, Pro Football Reference (pro-football-reference.com) is a wealth of information.
There are podcasts that deal strictly with NFL betting, as well as sports betting in general. You can find 10 of them at this link (/sportshandle.com/sports-betting-podcasts-worth-your-time)
Twitter is sometimes a good place to find information, especially prior to kickoff as news filters out about injuries and other things that could have an effect on games that day or night. The advent of fantasy football has increased the availability of news, especially on Sunday before the early set of games kickoff at 1 p.m. Eastern time in America. There are many accounts that are worth a follow on Twitter. Here is a link to some of them (sportshandle.com/twitter-sports-betting-follows-essential-list). Reddit is also a good source of information.