I would honestly start posting here, but sometimes the feedback can be a little intimidating from so many people (a lot of different types of people).
Since you're a beginner, go to a site such as, www.xanga.com and publish poetry through blogs. I'm 24 years old, and I still do this! It's fun, you can get feedback, and you can email friends your blog. It's not as harassing as myspace.com. If nothing else, all you need is a paper and pen!
Thanks for adding to the creativity! Keep it up!