Properties with baseboard heating. What should I know about them?

[Quandra Adams]

My offer was just accepted on a duplex and being a first time home buyer AND house hacker, I'm equally excited and as nervous as a long-tailed cat in a room full of rocking chairs but I digress. Anyway, has anyone ever had a property or lived in a home that had baseboard heaters? What was your experience as far as maintenance. I know nothing about them but this duplex has them. Any info pro & con would be helpful!