I only own a 3 channel helicopter but would like to learn some advanced flying. Ive seen helicopter books at the stores but do you think its actually worth buying? I see a lot of good resources here but it would be nice to take something with me for reference.
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I have no experience with RC helicopters, so my imput on the matter won't mean dirt. However, I did find something via Google that might help you:
"The advanced guide to radio control sport flying"
Gunship isnt that for Rc airplanes? it doesnt look very helicopter related.
I'm not sure as Google books only give you small previews into the book. I'll do more searching.