Ya, you can get more in depth kits from Home Vintner, but those Brewers Best are pretty foolproof. You don't want to put all that effort in on your first try, and end up messing something up and getting discouraged. They also have all sorts of add-ons you can get for those kits, which are nice to experiment with early on in your learning.
The nice thing is once you get one going, you can start another in a few weeks, so you don't have to wait months to experiment. You just need extra carboys. I have 3.