You should check the Alice home page for details, but basically the program is in the public domain (i.e., anyone can use it). The only restriction I recall is that you need to give the Alice team credit.
The same applies to Dick Baldwin's excellent (if somewhat long
) tutorials.
I can't see anything that would stop you as long as you don't ask others to pay you for it. Even for commercial use, the restrictions are very few as evidenced by the number of texts that include the Alice software as part of the package..