How to use the gerunds?

Hi !
I’m from Vietnam and I have a question.
How do use to gerund?
I need clear explanation.
help me, please !

Gerund always ends in “ing”. Some grammarians call it “verbal noun”. Anyway it should be used like/as? any other noun.

I like small houses.
I also like paintings on its walls.

houses ~ noun, plural
painting ~ verbal noun (Gerund), singular (Could be plural as well, paintings)

I suggest you read this: Gerund or Infintive?[YSaerTTEW443543]

TOEIC listening, photographs: A mighty vessel[YSaerTTEW443543]