I'm Clueless I Need Help on Pruning

i need help on prunning my plants i just started to flower them today i shut the light off for the first time since i started and im thinking on pruning is it to late and if not can some one please give me details on how the process goes the problem manily is i dont really understand growers lingo so when i read older threads it like chinese please resond thank u

whats the best way to make a plant bushy unlike the tall sparse looking ones i see?