Just open 14gas/14pool for now, its very safe for all match-ups so it simplifies things and forces you to macro harder, which is good. After u get promoted to gold u can start thinking about going hatch first.
Easy to learn transitions:
Speedling expand (ZvT/ZvP/ZvZ) - Pull drones off gas as soon as you have 100 gas and start zergling speed. This should occur around the same time the pool pops. Make 6 zerglings to pressure opponent and expand around 21 food.
Baneling all-in (ZvZ) - After getting zergling speed, get a baneling nest with your next 50 gas. Cut drone production and keep making zerglings. Never pull drones off gas.
Even the smallest donations help keep sc2sea running! All donations go towards helping our site run including our monthly server hosting fees and sc2sea sponsored community tournaments we host. Find out more here.