Saw sharpening: The only jig I have seen came with the saw sharpening courses From years ago. DIY time honored tradition. Yep! Practice makes perfect. Practice on cheap Saws first. You tube is my go to for just about any how too's. one thing that is just as important is a good saw set tool. I have one from the 20's. don't know if they still make them in this throw away society. Some of the "older" carpenters may know how. Most don't because it was as production first so you didn't have time to sharpen saws. Buy another one. One more thing. You can't get it right if you can't see, so good lighting and probably even a lower power set of cheaters would be helpful.