I've wanted to play the banjo long before I ever got a guitar. I recently came into possession of my father in law's banjo from 1975.
Congrats - I started out on guitar (12-string), but always employed a "Fingerpicking style", and never really learned to use a pick. That proved to be a significant help in learning banjo.
WHat I've noticed is that SOME "Flat pickers" seem to have a serious problem trying to use finger picks, and move their fingers in sequential fashion. If you don't you're halfway home already.
The Finger picks will DRIVE YOU UP A WALL for the first month, but then you stop feeling them and they just are "NAtural".
I twist the end on my thumb pick (using a hair dryer until the tip softens and you can deform it) so that it meets the 5th string FLAT instead of scraping on the edge of the pick. makes for a cleaner sound.
Earl Scruggs has a good Banjo book with a learning CD published by Peer International.
http://www.amazon.com/Earl-Scruggs-5-String-Banjo-Enhanced/dp/0634060430
Tony Trishka has a book "Bluegrass Banjo" published by Oak that I started out with back in the day,
http://www.amazon.com/Teach-Yoursel...8&qid=1361426423&sr=1-3&keywords=tony+trishka
There's a bunch of learning stuff on YouTube (just put in "Banjo" and a bunch of stuff will pop up) but I THINK it's good to at least START with a book (as noted above) of tablature to get the right fingers (left and right hands) in the right places to begin with.
"Cripple Creek" will probably be the First piece, then Foggy Mountain breakdown, Earle's Breakdown, and "Reuben's train" in "D" tuning.
Dear Old Dixie by the Cedar Junction Bluegrass Band. - YouTube
and if you like "Frailing/Clawhammer style" (Grandpa Jones) - then Pete Seegar has a book that'll get you started.
http://www.amazon.com/5-String-Banjo-Music-Sales-America/dp/1597731641/ref=pd_rhf_ee_s_cp_4_C10W
Rabbit in the Log by the Cedar Junction Bluegrass Band - YouTube
I use a Gibson "Earl Scruggs" model Mastertone, and an old Bakelite Body "Harmony" banjo in performances. What do you have?