get (one's) head around (something)

To understand something that is challenging or confusing. It took a while, but I've finally gotten my head around this chapter in my calculus textbook. Wait, you two are dating now? It's going to take a little while for me to get my head around that!

Common Names:

Name	Pronounced	Usage
İLyas	-	Turkish
Henriette	awn-ree-ET (French), hen-ree-E-tə (German), hen-ree-ED-de (Danish), hen-ree-ET-te (Norwegian)	French, German, Dutch, Danish, Norwegian
Gonca	-	Turkish
Susanna	soo-ZAHN-nah (Italian), SOO-sahn-nah (Finnish), soo-ZAN-ə (English)	Italian, Swedish, Finnish, Russian, Dutch, English, Biblical, Biblical Latin, Old Church Slavic
Bolormaa	-	Mongolian
Alexa