Netgeist,
First off, congratulations! Picking up an instrument and learning to play takes courage, determination, and a lot of work. I started playing at 32, and I had friends scratching their heads, questioning my decision. I'm 39 now, and I'm so glad I had the courage to stay with it. Music is a huge part of my life and I practice every day. I play in two bands now and it is so rewarding, I can not describe. All the great people I've met, played with, learned from etc. has been one of the best things that has ever happened to me.
I reccommend getting a few lessons from a bass instructor. I say bass instructor because many guitarists give bass lessons, but I believe bass players usually have a different outlook. If there are any bass clinics, classes or camps near you, you should sign up.
Set some goals. Practice good technique, work on playing accurately and for long and lon ger periods of time. One of your goals should be to play with others. When I started
I just wanted to play along with cd's and play for fun by myself. That was great, but got old quick. Then I started recording myself with a drum machine. Again, helpful (I still do it) but it got old. Then I started going to open mics, and WHOAAAA! This was more like it! I never felt so good in my life! next I put flyers up in music stores. Found a drummer,(now my best friend), met a guitarist who knew another guitarist, and now we've been together 5 years and played over 250 shows in 4 states. I've since stepped up my musicianship by attending camps with Gerald Veasley and Victor Wooten.
Sorry for the long ramble, just stick with it, stay positive, don't get discouraged and most of all have fun!