I always recommend: Think Python: How to Think Like a Computer Scientist http://www.greenteapress.com/thinkpython/ http://www.greenteapress.com/thinkpython/ I

I always recommend: Think Python: How to Think Like a Computer Scientist http://www.greenteapress.com/thinkpython/ http://www.greenteapress.com/thinkpython/ It's a pretty good overview of basic concepts of Computer Science, it's focus is Object-Oriented but does cover functional programming as well. I would also pair any of the suggestions offered here with http://pythontutor.com/ http://pythontutor.com/ adding the visual component of program execution will help absorb the material much quicker and get you used to the nuances of python.