Get up on one's stuff synonyms

What is another word for Get up on one's stuff?

• get up on
• master
• become adept in
• become versed in
• gain a good knowledge of
• get down cold
• get up in
• make oneself master of
• become conversant with
• become well-versed in
• gain a thorough knowledge of
• get down pat
• become familiar with
• gain command of
• get hep
• learn all about