Quote (TheReturnOfTheRough @ Nov 25 2012 05:58am)
I'm in bronze, play zerg but I lose a lot.
I would advise you to start watching some of Day[9]'s videos on youtube. Just search day9 and it'll come up. Start pretty much anywhere with pretty much any of them.
Beyond that, google for some common Zerg build orders. For now, learn 1 build order for ZvP, one for ZvT, and one for ZvZ. Practice those and you'll get a lot better, rather than trying to freestyle it.