Need help sports betting

[MikeTexas]

Can anyone in here direct me to a website with some good information on sports betting? I've signed up at several online poker rooms/casinos through an affiliate and they require you to either wager some money in a casino or place some sports bets before you can withdraw your money.

I would rather just bet on sports instead of wagering money in the casino but I dont understand all the statistics and numbers ("lines"). Can anyone point me in the direction of some good info? Or can anyone here explain to me how to bet on baseball.

Thanks. Your help is much appreciated.