Angular momentum operators



Hi,
  I am new to symbolic manipulation software. I hope my questions will
not be too dumb:

- Is there a textbook, for Maxima? Is Maxima similar enough so that I
can just go to he books written for Maple (or Mathematica)?

- By any chance, is there a package where I find Clebsch-Gordan, Wigner,
3-j, 6-j coefficients, and all that jazz?

- I am using linux on usual pentium computers. Which lisp compiler is
the best (I have clisp right now)?

Thank you 

Alain