When I was a kid a friend's Dad had a really nice 24 track pro studio. That's where I learned about Neve boards and found out I the mic I really wanted was $10K! From there it was hands on, reading Mix and asking good people.
My method, and you could, no exaggeration, build a spaceship with this method, is simply find someone who can do what you want to be able to do and ask them.
It sounds simple, but it's based on the fact that most people who are good at things are doing it for passion, not money, and are eager to help other people who share their passion.