How do I clean out my Gmail inbox?

Related questions

1. Did Google get rid of inbox?
2. What is the difference between Gmail and Google+?
3. How do I get Gmail on my computer?
4. Is my Gmail going away?
5. Does Gmail have a limit?
6. Is Google calling free?
7. Can you contact Gmail?
8. Is Google the same as Gmail?
9. Will Google shut down Gmail?
10. Is there a Gmail app for PC?

Tags

1. #everything
2. #above
3. #deleting
4. #clear
5. #current
6. #button
7. #inbox
8. #emails
9. #small
10. #primary
11. #empty
12. #click
13. #promotions
14. #gmail
15. #corner
16. #select
17. #simple
18. #compose
19. #delete