They offer some really decent information and you'll know it's, usually, not biassed.
For example, you wanted to know what parlay was:
https://en.wikipedia.org/wiki/Parlay_(gambling)
Wikipedia article on odds (This one might be too technical):
https://en.wikipedia.org/wiki/Odds
But for online poker there's an even better resource than wikipedia:
http://www.thepokerbank.com/
I hope you got some help from all of this
Thanks. I think this is what I need. Just walking into gambling here and betting on sports I have only done stuff like Poker and little things like that where there are no odds or different payouts depending on the odds. Any recommendations on how to beat the odds? Or is it just the same do research on the team and see how they are doing?