Nikeairx, Everybody, at one time or another had to have all this explained to them so dont sweat it. Lets say tampa Bay is the play tomorrow(if they go under tonight it is). You place one unit on the over.(what ever your unit is:$10,$50,$100, $1000 whatever, but since it is a chase make sure you can afford to lose it. Usally 1 or 2% of your bankroll). If it goes over the total, you win and the series is over. If it losses, you place another bet on the over again Wed. This time what you lost on the 1rst bet PLUS one unit. If it goes over, you win and series over- you won one unit. If it loses, you once again place another bet (This process is the chase), this time total of the amount you lost with the first 2 bets PLUS one unit.
I think this particular chase system calls for you to stop chasing after a loss or a push.
I hope this helped. Don't worry about asking questions, everybody here is pretty cool about helping out.