I enjoy a lot dissassembling things. I start as a computer technician years ago, and now I wanted to repair Apple products .
At the beggining I started with iPhone 3GS screens, and easy things like that... But soon I was repairing all models of iPad, iPod and iPhone. I was very slow at the beginning, but now I can change an iPhone 4S display in half an hour...
Take it easy. Always. Don't think the repair would it be done by itself.