I have started recently dealing with SPSS, but i am having some trouble learning some aspects. So kindly provide me with any useful comprehensive sources.
There is a series of educational articles called "Basic Statistics for Doctors" by Chan YH that I find particularly useful.
For books, you can see "SPSS for dummies" by Keith McCormick and Jesus Salcedo, or "A handbook of statistical analyses using SPSS" by Sabin Landau and Brian S. Everitt.