LT needs new shoes and discs, few q's

Hello, newbie by rights here...

Is there an online parts catelog?
Is there any good 'how to' sites online?
Best 'how to' or DYI car manual?

Now the brake stuff...

I need to replace the rotors and pads on the front of my LT. I would like to know as much as possible before working on it, including brake fluid things, caliper piston compression, everything. I would like to flush some of the oild brake fluid too.

Thanks in advance, ya'all!
Robert