1st Books: Stories of How Writers Get Started is a blog that includes exactly what the title suggests.
And here's a bit from po-blogger Diane Lockwood and how teaching brought her to poetry.
When I graduated, I returned to teaching. Several years later I saw an advertisement in the English Journal. William Stafford was writing a poetry textbook for high school students, and he wanted teachers to volunteer to test the assignments. What the heck, I thought, and volunteered. Every two weeks for the next six months I received one or two poetry prompts. From the very first one, I was hooked.