[Crex]

If you are the least bit skilled with your hands and have a basic set of shop tools for making knives, you can make 90% of your leather working tools yourself. Most are really very simple and can be made from a variety of "scrap" materials found in most shops.
The late Chuck Burrows also had a great beginners DVD if there are any still available. Very detailed instruction that is easy to follow and understand. Go down to the leather working section on these forums and do a search on Chuck's video also look at some of his work....you will find it very inspiring. He was truly a master at leather crafting.
One thing to always remember - Before you start any leather working clean your shop of all dust and wash your hands. Dampened leather will soak up any speck of dirt it comes in contact with. Another is to not be miserly or stingy when you cut out your sheath pattern allow extra for adjustment, leather is an organic material and doesn't always do exactly what we want or expect.
Have fun.