Hi Wilfred & Andrew
The Chapman Stick is an awesome instrument, I saw one for the first time on American Bandstand when Mathiew Wilder performed in the late 70's I believe, as for how easy it is to play, some guitar and bass techniques don't really apply the same way.
its keyboard like as well, and there are many different tunings ( you can choose from many)
Standard ( classic ) Stick tuning at the 7th fret is (bass strings) ( high to low strings) B, E, A, D, G and ( chord/melody strings) ( low to high strings) C#, F#, B, E, A on a 10 string Stick.
Its like playing a bass backwords while playing a guitar fowards, tapping everything, no picking, you should see Emmet Chapman play, get the Hands Across the Board video, He makes it look effortless, I was blown away when I saw it, like any instrument you have to really dedicate time to it, I play Stick a little, and some keys, and a little gtr but more bass than anything, I wish someday I could play the Stick as good as Emmet or one of the other players I've seen, I don't think I'd ever play any other instrument ever again but the Stick.........
B.