Start by visiting http://www.howtobrew.com/
and reading that book in its entirety. Search around this site, there's a wealth of knowledge here. The search feature is very good, and there are very few topics that haven't been visited at least once.
Specifically though, if your turkey kettle is at least 6.5 gallons, you're well on your way. Fermentors are as cheap or expensive as you want them to be, and the DIY projects are limitless.
Welcome to the obsession!