I have an online programming tutorial published with CC-BY-NC-SA license.
Does the NC (Non-Commercial) mean that no one may print it and sell as a book?
Does it mean that no one may publish it on their website and put ads to get money from it?
P.S. And, for what it's worth, if I accept contributions from other people, how can I ensure that I still can do what I described here? Sell/put ads/do whatever I do when the book is fully mine.