I am transitioning using cornrows. Did you want to know the best way to braid the hair or how to maintain them?
I don't do them myself though, but I've had them in for almost two weeks. I posted a "cornrow maintenance/transition question I think last week and then there was a thread discussing the best types of braids to transition with. i posted in it also but can't remember who started it.
I would like to keep them longer than two weeks, but my hair is growing a lot! i may have to get them redone this saturday, but may try to maintain a few more extra days.
i haven't washed yet and if i continue to stretch, i may.
princess has some really good cornrow tips! hope i've helped a bit.