slightly off-topic: software marketing issues

[Viktoras Didziulis]

Can anyone recommend any good books or online resources on how to market and
sell software products, arrange beta testing, choose suitable type of
licensing, avoid pitfalls (unsatisfied customers, money-back and related
things), creating product website, user groups, forums, mailing lists,
software registration database; source code protection means and policies,
and what-else-to-take-care-of... Thanks in advance! 
 
Best wishes 
Viktoras