How do I advertise for free on AdWords?

Related questions

1. Why is Google AdWords important?
2. Why should I use Google AdWords?
3. What is Google AdWords process?
4. What is better than Facebook ads?
5. Is Google AdWords hard to learn?
6. Does Google AdWords work?
7. How long does it take to learn Google AdWords?
8. How many ads does Google have?
9. How long does Google ads take to work?
10. How important is Google AdWords?

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