since SAS university edition is out and freely available for non-commercial use (or at least what i understand), i want to buy a book for learning SAS for general statistical needs which i can also use for a desktop reference manual. I have basic knowledge of SPSS (thanks to discovering statistics using spss by Andy Field) and Stata (A gentle introduction to Stata by Alan A Acook). SAS version of Andy Field's book has some negative reviews on amazon which hesitates me. Any advice and experience is appreciated...