From my experience I would think assembling one of Old Faithful's prepared kits would be straightforward and easy. I didn't realize he was now offering the kydex already molded to the gun shape, but that's probably a bonus for someone doing their first kit. Molding the kydex is not that difficult, but does require some special tools (many of which can be homemade).
My one caution is his method of molding the sheet kydex into the belt clips. I've had bad luck doing this with all thicknesses of kydex and abs plastic. You'll also note that Crossbreed used to mold their clips this way but stopped after too many were returned after breaking. They now offer the spring steel clips. You can buy clips only from Crossbreed or Comp Tac or Tucker Gunleather or some basic spring steel clips from Tandy Leather. I'd recommend any of these over the kydex sheet "bended" clips that Old Faithful uses (or at least used to use last time I looked at his site).
Anyway, I say go for it. Good intro experience in holster making.
When you get ready to try your own from scratch there are plenty of threads around here and on other forums. Best advice on kydex molding is to have a heat gun ($20 at Harbor Freight tools) not merely a hair dryer, and also access to an oven or toaster oven. Ideally you'll also want a foam-lined press (can be homemade from 2x4 lumber, plywood, and door hinges) and/or a vacuum forming machine (also easily home-made from lumber, a Shop Vac, and a few Shop Vac attachments - see this YouTube video " onclick="window.open(this.href);return false; - I made one like this and have been pleased with it - there are also other versions available on YouTube just search diy vacuum forming or homemade vacuum forming)
Best of luck
