babyhum, I've found Martin Sitter's DVDSP books to be very helpful. I have his Visual QuickPro Guide for DVDSP2 and I reach for it more than the official manual. I currently use DVDSP 3 and his book does me just fine. The Visual QuickPro Guide is only current for v3. But, there's another title that he co-authors covering v4. As long as he's writing, I'm sure it's just great. Worth the money, definitely!

Apple Pro Training Series: DVD Studio Pro 4

DVD Studio Pro 3 for Mac OS X: Visual QuickPro Guide

Once you get used to the workflow, you'll find it's a breeze to do anything you want. Good luck!