Hi there!
Well, the way I did it was: I messed arround for a few hours a day with my bass, and by messing arround I mean just trying (sp?) to play basic stuff I had inside my head. IMPORTANT NOTE BEFORE I FORGET (I´m in a class): ALWAYS WARM UP without your instrument for 10 minutes or so and STRECH. If your interested in knowing my warmup routine, just ask and I´ll post it, I´m in a bit of an hurry now.
Also: The way I did it, I started using my four finger of my fretting hand since I began playing, and man, I think that is the most rewarding thing to do. Some people argue about it, but if you do warm up and strech before starting and do regular pauses during your pratice session, it´s probable that you don´t have any problem with your fretting hand. I´ve been playing that way for four years (so little!) and I never had troubles with my hands, my brother always made me warm up and strech before I played when I started (he´s a sxophonist with a passion for guitar and bass).
I sorry, but I´m in a hurry, I will do an extessive post when I finish my classes. Ho, and sing me the f***ing Happy BirthDay!!!!!!!!!
Latter!