Hey, I know a lot of poets, and they all write poems that are way better than the cr*p I see in the lit reviews! I'm gonna start my own magazine, and publish really good stuff! --Ever had that thought?
Well, time was that starting a zine was tough-- you had to know layup, typesetting, printing, distribution... but these days word-processing and the internet, along with print on demand publishing, makes it easy to start a 'zine, or edit an anthology.
Oddly, although there's far too much advice around on how to write poetry, it's a lot harder to find much advice around on how to be a poetry editor. But, if you really wanna be a poetry editor, you might first, check out the wisdom from Elizabeth Barrette's blog The Wordsmith's Forge, with some tips:
Once you've started it, she follows it up with "Affordable ways to attract contributors". (Much of which advice comes down to "treat contributors nicely"-- good advice, I can tell you!) And, if that's not enough, she has a list of links of Resources for Editing Poetry.
Go to it!