How can I improve on my pitch without vocal lessons?

I've been told that I am VERY pitchy and that I need vocal lessons.
I'm trying to arrange that, but if I cannot, i must do it myself. But
i don't know how. HELP!!!

Here's a short clip of me singing:
http://www.youtube.com/watch?v=74bW1ACwOlE (it may still be uploading)