So as the title says, I have a mid-2010 MBP with OS X 10.6.3, and I want to install El Captain, but don't know where to start. I also have BootCamp with Windows 8 installed and I was wondering if I can install El Captain without losing anything that's on my BootCamp. Is this possible, or will I have to format everything? If it is, how am I supposed to do it? Thanks.