advice needed for this beginner

Hello everyone, im somewhat new to the sports gaming world. I started off betting just for fun, but now im looking to take it more seriously and build a larger bankroll. To give you a quick background on me, I bet on basketball, baseball, football, and soccer. Im currently sitting at a $300 bankroll. If anyone could give me advice/suggestions on money management it would be greatly appreciated. I understand parlays you should stay away from? what are the important things you look for in matchups? Really any advice or tips anyone could offer would be greatly appreciated. Im hoping one day to flip that 300 in to something much greater.

sir number one rule. never follow brandon lang's picks

Raise $29,700 to add with the $300...then you will have a chance.
Specialize in one or two sports, tops. And only bet those sports.
Most guys here and I'm including myself are looking for action everyday.

I'm not kidding with the bankroll. Without a great bankroll you will have to go on an incredible streak not to lose you're $300.

Read everybook you can get you're hands on. Good

Do your own work. Record every bet and play a small percentage of you're bankroll. That's why you need the $30,000.

Follow my baseball picks.

Best advice. When at the sportsbook bet behind the NUN!!!!

Figure out a unit size, between 2-5% of the full 300$ or whatever you now have.  Bet on the sports you follow and know, dont bet for the sake of action.  Record your plays, wins and loses.  Winning over the long haul is the realistic way to show profit, assuming you can win more than lose over the long haul.  Good luck!