Below is a video detailing a rush tactic for players using Protoss, Dark Templar Rush.
probes till 10supply
10 supply: Pylon
once pylon is completed queue 3 probes with chrono boost
assimilator(probe goes to scout)
research warp gate
and build a last pylon near the enemies base where he cant detect it
When warp gate research is completed use it on your gateway.