I certainly see that I have a lot to learn about blade selection for my particular machine. When I bought my Porter Cable saw, there were a couple extra blades that come with it, but I know, once I get started, there will be blade breakage. Most of my immediate practice work will be on scraps of plywood I have laying around, so, I guess, my question is: What type of blade is best for the beginner, or is there one, and when one does order blades, is it imperative the blades fit my particular model, or are all blades universal ? I do understand the concept between a pin end and pinless blade. Pardon the ignorance !