Ok, so I am seriously considering getting into making blades. I think I would be able to do it for the most part right now with the right equipment besides heat treating which I just know nothing about. I'll post on that later...

Anyway, my question is this: I have been looking at steel bar stock for knifemaking on knife sites and really just don't know the difference between a lot of them. I have seen 440C, ATS34, CPM 154CM and S30V, Tool Steel and Forging Steel among others. What are all of the differences? What is suitable for a razor? How do you go about choosing between Carbon and Stainless? Which of these are Carbon? lol As you can see, I'll probably have a lot of questions coming up. I'd prefer people answer only if they really know what they are talking about rather than "I think this is...". So thanks for reading and I look forward to the responses!