the sage book has a good set of info on research paradigms, which I found a helpful starting point on methods, as it helps you understand how your own point of view can influence what method you choose, and the goals, outcomes, of each kind of paradigm. I found it extremely useful to locate myself and method within a paradigm, and then to understand in a systematic way the other kinds of paradigms out there. They have some easily digestible tables that make this all very understandable.