to get yourself ready for something
何かの準備をする (nanika no junbi o suru)
"I like to prep for big presentations the night before."
"私は大きなプレゼンテーションのために前の晩にprep forするのが好きです。" (Watashi wa ookina purezentēshon no tame ni mae no ban ni **prep for** suru no ga suki desu.)
to release built-up stress or pressure
to become less serious and eventually end without major harm
to introduce or suggest new ideas for discussion
to write something so it can be used later for a purpose
to plan how much money will be needed for something
to start selling in new regions or countries