To Prepare
する verb
You've seen that 準備 is preparations. This is the verb version, so you get yourself to prepare.
じゅんびする
The reading is the same as 準備.
今日は金曜日だからお弁当を準備しなくちゃ。
Since it's Friday, I need to prepare a bento.
準備する前に先に朝ご飯食べちゃいなさい。
Finish your breakfast before getting ready.
新居を準備するのにかかる費用はいくらぐらいですか。
About how much does it cost to prepare a new home?