Im fairly new to online sports betting but i do it through another website that i play poker on. Ive not had to much luck other than this last week. Im looking to figure out a good system on how to pick the best teams and right teams in a parlay situation. Also im looking to figure out all this jumble of information such as units and -100 and things like this mean. Can anyone point me to a good site that can explain all of this to me?