WordNet sense 1 (find out, learn, or determine with certainty, usually by making an inquiry or other effort):

ascertain, check, determine, see, watch, find out

WordNet sense 2 (impart skills or knowledge to):

instruct, teach

WordNet sense 3 (commit to memory; learn by heart):

con, memorize, memorise

WordNet sense 4 (be a student of a certain subject):

read, study, take, read

WordNet sense 5 (get to know or become aware of, usually accidentally):

discover, hear, pick up, get a line, get wind, get word

WordNet sense 6 (gain knowledge or skills):

acquire, larn