Good source of tools here
The basics:
1) a spacing cutter handle and a double cutter blade or three. I like 22lpi or even 20lpi.
2) a single line cutter
3) a grease pencil
4) some clear, stiff acetate plastic to make a 60* angle template and a flexible straight edge.
5) auto detailing pinstripe tape in 1/8” and 1/4”. Plastic label-making tape can be nice too for straight lines. Both help tape off borders and set your master lines. Not strictly necessary but really helpful.
6) an old throwaway walnut stock from the throwaway bin at the local gun shop to practice on (or finish your own piece of scrap wood to practice on.)
@Steve300xcw if its helpful shoot me your email and I am pretty sure I can send you a instruction guide with pictures that a friend of mine did.