TvP: I keep getting owned by 3-gate stalkers. suggestions?
At the start of the game?
A bunker at your ramp instead of two supply depots + rax will stop it dead. The maths you need to keep in your head is he needs 2 stalkers to every marauder. The more maurauders you get the worse it is for the stalker. If you have 10 rauders + 10 marines he'd need like 30 stalkers...

have to remember that 
