[ColdDecker333]

I started PLO at 0.25/0.50 level - played that about 4k hands.
-> moved to 0.50/1 - those games I played about ~10k hands.
-> moved to 1/2 - still play this level sometimes when there´s awfully good game, but very rarely. Have ~70k hands logged in at this level.
-> started to mix in 2/4 after playing at 1/2 about ~20k hands. I currently play these levels (2/4 - 3/6) and some 5/10 shots mixed in. (I always buy-in full, also when I move up).

IMO level of play at 0.5/1 and 1/2 is exactly the same. Sometimes you find better tables at 1/2 than 0.5/1 and vice versa. Player pool is pretty much the same. So I would try to skip 0.5/1 as fast as possible and then learn the routine at 1/2 level, where you can be a big winner even making some big mistakes occasionally. Moving up from 1/2 to bigger games is a little bit harder job, because player pool gets significantly smaller (and somewhat tougher). I´d say that your winrate halves when moving from 1/2 to 2/4 at the beginning at least.

EDIT: I had 1 year experience in limit hold´em before I started playing PLO.