I personally think it's better if you learn to make parts first then start with replacing them. That way you have a much greater understanding of what exactly you're replacing and how it was made or how it can be made. Plus it's sometimes almost impossible to find parts of older watches and i don't just mean antique pieces, but some watches from just 50 years ago are hard to find replacement parts for because no one makes them anymore.I know where I can lay may hands on around a thousand wind ups in need of repair. But where would I get parts? Also what are some tools I'll need? I'm really only interested in Bergeon tools and have seen some on Amazon.com. I'm thinking to start maybe a set of screwdrivers, tweezers, 7x loupe, Wenger minator, watch case back opener, and, oil.