How does a travel credit card work?

Explain it to me like i’m 5.

So i know I’m borrowing money from a bank and it’s on a card. So let’s say i have a $10,000 limit on it. I get the card and book a trip that costs me $2000. Do i get a certain number of points for using the card to book the trip? Does it mean that the more points I get the less money i will be using next time to book another trip?

How much am i paying back every month? If i want to avoid interest do i pay the whole borrowed money in full before the end of the month?

When can i cancel the card?