Just my opinion-
I would get something other than Rick Welch's dvd. I got one of his newer ones and was a bit disappointed. He had some great tips and ideas about how to shoot well, but I guess I was expecting something a bit different. The video had a lot of him shooting (and he's rather amazing, by the way) and a lot of testimonials of students of his as well as them shooting. It just seemed like a lot of other stuff in there that I had to get through just for the good bits of shooting wisdom. I found myself somewhat irritated by the time the dvd was finished.
Again, some really good info in there that can help, but I could just go to his website to see all of the students shooting and saying how great the school is. Good luck and I hope you find something that helps you.
Jeremy