Grats on the new banjo uke Steve!
Check out a small company with a youtube channel. Company is called Duke they make banjo ukulele and hooked up with a guy I think is called Ukulele Stu? He has some tutorials played specifically on a banjo uke.
I’ve been attempting to learn how to do bum-ditty picking, which is totally a banjo/banjo-uke thing, but sounds great on a regular ukulele too. That’s been difficult because the videos I found on it, don’t show quite enough of what to do to make me succeed or how to apply it. The best ones I found were from a folk ukulele site but they don’t quite show enough of what the picking hand is actually doing for me. 🙁
I’ll keep my eyes open for good versions of dueling banjos and rainbow connection for you.
Hope more people can be more help, good luck, and id love to hear your new instrument in a challenge!