I'm totally new at all of this too. First stop should be the META for newbies in the meta pages. It really depends on your grasp of electronics I think. If you've got experience (engineering), you may be able to start at the project pages. If that's the case, start browsing some of the projects that are popular and created by the users here, like the SSL, the green mic pre, g1176, etc...
Have fun with it. I just bought a calculator.
kb