They're named after trees, flowers, animals, some other objects like mountain, river, seasons, etc. Rarer are names after virtues, such as generous, brave, wise, sympathetic, etc.

(Though I often make up the names before the meanings)

Some peoples have family name/given name system, while others only have given names, with optionally patryonyms/matryonyms.

I also enjoy this interactive explanation

This reminds me there was a time in my country when not many people could afford a TV, so the TV owner's living room became a place for gathering