Three sites for you

http://www.poetrymagic.co.uk/

The above website is a sort of "teaching" website--it has filters which you can use to become better at both poetry critique and poetry writing (which go hand-in-hand). It has beginner-level stuff all the way to more advanced tools. It's a fluffy-looking site and has the world's dorkiest name, but the info is sound.

http://everylitmag.tripod.com/Biglist.html

This is a list that some kind fellow has created that has just about every lit mag known to man on it--getting close to 2000! I've been saying to people on one of my online workshops that it is necessary to read a lot to see what is out there--if they claim they don't like "modern poetry," they simply haven't read enough, because there really is a load of stuff out there. This list is comprehensive, and includes specialty sites just for gore, or sex, or death, or love, avant-garde sites, post-avant sites, standard modern lyrical sites, as well as some 'fluffy' sites that don't seem overly rigorous. I post this list so you can read more--if you feel inspired to submit work to any of these sites, make sure that they're legit, and beware of any entry fees--entry fees are okay if there is a legit contest attached with an expert reader you can Google and check in on, but otherwise, submitting work should be free-of-charge. And, ask about any sites "reading" policies--readings should be "blind."

A sick amount of E-zines, not all poetry related:
http://www.e-zine-list.com/titles_by_first_letter/A/page1.shtml

Happy reading!

Dani