Yeah, his tutorials are great. Just in case you don't notice the link is to the beginners tutorials but he has more advanced tutorials on his site.
http://www.harrysastroshed.com/pixin...sighthome.html
I bought and paid for Warren Keller tutorials, and Harrys walks all over them. I found with the ip4ap tutes you couldn't really follow along because there was always a process that would be explained in a future chapter wtf!! And because you can only stream them from the web (although there are ways around that) and no notes to follow a long to you may as well stick to harrys. Not that warrens are bad I just found the a little frustrating at times.
Thanks
Sandt