I found in college that very often id want to ask a prof a question, but really, i didnt understand the situation well enough to even know what to ask. Really, i just wanted the prof to do my work for me... to somehow stick the understanding into my brain with no effort on my part.

What i ultimately found was that if i worked on figuring out the precise question to ask, id almost always have worked out the answer, or the understanding, in the process.