So - can anyone help?

I'd like to play the banjo in a trad jazz band.

What would be the best sort of banjo to choose?

What would be the best way to tune the banjo?

Is there a tuition dvd or tape - all about playing banjo in a trad jazz band.

is there a book with the chords in with all the standards I am likely to need to be able to play - to sit in?

I have some experience of playing the guitar.