Welcome! You've come to a great site. Everyone here is remarkably helpful and newbie-friendly. No question is stupid.
The consensus seems to be that the M10 is a good all-around recorder, though internal mics are rarely as good as even cheaper externals. Plus, the mere fact that keeping internal mics properly placed and being able to operate the controls of the recorder is a problem. Church Audio makes affordable, high-quality mics that everyone here recommends, plus Chris Church is a member here. You'll be able to connect to the board with the M10, as long as you have the right cables and connectors. A Y-cable with RCA's on one end and a stereo mini plug on the other is a good start, plus a pair of RCA > 1/4" adapters as well.
The best teacher, however, is experience. Once you get a recorder, experiment with it in the field, and if you can, borrow equipment from others to figure out what sounds best. It takes time, practice and experimentation, but taping is like sex: it takes time to get it right, but the practice is a heck of a lot of fun!