know the first thing about

not know the first thing about something

to not know anything about a particular subject I don't know why you're asking Rob, he doesn't know the first thing about classical music.

Name	Pronounced	Usage
Elpis	-	Ancient Greek, Greek Mythology
Hynek	-	Czech
Pino	PEE-no	Italian
Magdalina	-	Old Church Slavic, Bulgarian
Dobroslava	-	Czech
Sarah	SER-ə (English), SAR-ə (English), ZAH-rah (German)	English, French, German, Hebrew, Arabic, Biblical, Biblical Hebrew