Hello. I'm an undergraduate physics/applied math major hoping to go to grad school. I have a professor in my school who I'm interested in doing research under because the subject of his research is, well, interesting to me. Also I'm consider it in graduate school. I had him last semester and got an A in his class, and he seems to have no reason to hate me, but it seems awkward: I emailed him a few weeks ago (over the Summer) asking about tips for studying for the GRE subject test, as I had another professor suggest that I get multiple opinions. He responded very tersely, almost insultingly so. It may very well just be his way of communicating, but it made me doubt myself here. So my (kind of stupid) question is this: how can I go about emailing him about a research position now? Is that right to do? I don't want to be annoying to someone who may or may not like me that much. I'm hoping to get a publication and a rec. letter out of this, if possible. I'm really interested in the material. Thanks for all your input!