Day9 has daily content specifically towards becoming better at the game.
All those vods are found here:
http://day9.tv/archives/Just search for a specific match up, like ZvT.
For general tips; drones are everything.
Zerg is shit without the 80-90 drones to back it up.
Focus economy and making your queens puke on your hatcheries.
Some build orders;
ZvZ: 16h, 17g, 16p
ZvT: 15h, 15p, 15g
ZvP: Try to expand, but the kid will be a moron so just try to expand and somehow scout him without dying to the plethora of options Protoss has.
Also, join the d2jsp sc2 group on Starcraft:
http://forums.d2jsp.org/topic.php?t=66754239&f=214Enjoy.
This post was edited by NoLimit028 on Jul 12 2013 06:56pm