I used to work in an OHL arena and me and the other employees would play PRO-LINE during our shifts. Up until then I'd use nhl.com, tsn.ca and blind homerism/haterism to make my pics.
One night the biggest jackass in the rink told me about covers for stats, matchups, etc. He told me I'd lose money "if I listened to the guys in the forums." I signed up for a membership after lurking for a few days and started posting my garbage pics. I signed up for an account at a sportsbook, lost my first bankroll quickly, but have been betting relatively successfully ever since.
For the most part the jackass was right about blindly tailing ppl but the forums have been an invaluable resource for money management information, and general news and info. Also, cant say enough good things about the way threegirls and lipps run the hockey forum.