Before I took a 5-6 season break from SC 2 I had an all right understanding of all the races, both playing them and versing them, but recently getting back into SC 2 I'm at a complete loss when it comes to Protoss. I've been watching GSL and NASL, but for some reason protoss isn't clicking as much as the other races(MKP basically changed TvZ for me).
This is important to me though since I like to play random, but as it is, that leaves 5 possible matchups I don't really understand. I get the basic late game unit comps, but outside of that I don't know much. I'll tell you what I know about each of the matchups.
PvP - I know how to 4gate. I know 3 stalker, 2 gate, robo, expand. If that's an actual build and not something I made up. I know late game unit comp is primarily zealot, archon, colossus.
PvZ - I know how to FFE into a 7 gate, ~3 immortal timing. That's it.
PvT - I know late game is all about proper High Templar and Colossus use. Lots of zealots, some archons. That's it.
ZvP - I know to double expand at the start but be aware of cannon rushes. I know to max out on roach/ling before the timing I described earlier hits, because it's probably going to. Late game is infestor/brood lord and whatever other support can afford.
TvP - Late game is mostly marine, marauder, medvac. Ghosts and Vikings as appropriate. Drops are really important.
As you can see, one of the biggest problems is expansion timings. Aside from ZvP and and PvZ I don't know when to take the natural, and aside from ZvP I don't know when to take the 3rd. I only know one timing attack and I only know late game unit comp. Even for TvP I don't know the proper balance of marines to marauders at various stages of the game. So please, help me understand Protoss so I can be not afraid to ladder anymore.