As you have probably noticed, and as is true of any subject, everybody's answer is different. Even when they're saying the exact same thing, which they sometimes are and sometimes aren't, it can be difficult to tell. And sometimes people that don't really know the answer attempt to answer anyway.
Asking questions about something you don't know is a good idea, but when the something you don't know is actually an entire branch of science so that the questions necessarily become voluminous, then an introductory text might be a better idea. The book will speak with one voice, will have been reviewed and edited several times prior to publishing with an eye toward content, clarity and style, and will present a unified vision across the large number of related topic areas. I haven't read an introductory text on evolution in a long time, so I can't recommend a book, but maybe someone else can.
--Percy
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