How do you estimate stories in agile?

Related questions

1. WHO estimates for user stories in Scrum?
2. Why are story points better than hours?
3. Do product owners attend stand up?
4. How do you explain story points?
5. How many hours is a story point?
6. What is a purpose of the daily scrum?
7. What are the characteristics of a user story?
8. What does product owner do?
9. What's the difference between waterfall and agile?
10. What is most important according to the Agile Manifesto answer?

Tags

1. #multiplying
2. #duration
3. #points
4. #velocity
5. #knowing
6. #sprint
7. #entire
8. #story
9. #estimate
10. #stories
11. #average
12. #divided
13. #total
14. #further
15. #calculate
16. #better
17. #number
18. #completes
19. #project