Most perfective verbs look exactly like imperfective ones, just with a prefix. Prefixes might be different, but the most popular one is по-, which usually means that the action is done a little bit, for a short period of time.
COMPARE: - ждать – to wait (as a process): Я жду тебя – I'm waiting for you.
- подождать – to wait for a while, a little bit: Подожди минуту, пожалуйста – Could you wait for a minute, please.
An interesting fact is that
Perfective verbs do not exist in the Present tense, because Perfective indicates the result of an action, and the result is either possible in the past (has already happened) or in the future (will happen).