Synonyms and related words :
attain mastery of, be expert in, be informed, be learned in, be master of, be told, be up on, be well-informed, become adept in, command, get down cold, get down pat, get taped, get up on, get wind of, have down pat, have it taped, have the facts, hear, hear tell of, hearsay, know, know backwards, know by heart, know damn well, know inside out, know the ropes, know the score, learn the ropes, master, overhear