transitive (reflexive). To make oneself knowledgeable about something, esp. through direct experience; to acquaint oneself with something; (also) to…

to keep up to: to prevent from falling below (a level, standard, principle, etc.); to keep informed of. Also intransitive for reflexive.

colloquial (originally U.S.). to be (or get) wise to, to be (or become) aware of; to put (one) wise (to), to inform one (of), enlighten one…

to wise up (U.S. slang): to ‘get wise’; to ‘put wise’. Frequently const. on or to. Also reflexive.