How hard is it to cut my own hair? Any Advice?

I'm a dude, and I've got luscious locks of hair draping my shoulders. I like my hair long, but it's way too long now. So I want to try to shorten it up. Now I mean, I've gone to get my haircut all my life, and I've watched them cut it every time, I understand the basic principle of it. I'm planning on just taking little bits off at a time. What is your advice. How do I cut hair.