Simply, when you search on Google, you will see some ads at the top and the right of the result page, these ads are very relevant to the keywords you're searching for and those ads are also generated automatically. Advertisers who created those ads and they are willing to pay every click done by the user. But for more advertising spaces, Google let webmasters to display the same ads on their websites, with every click done through their websites, they will be paid too.
So, what is your rule as an online marketer? If you want to market your own product or other's products for affiliate commissions, you just need to set up an account with Google Adwords, and then you can determine the keywords you want to display your ads with them. You can try it by creating an account now.
Some tips for successful Google Adwords marketing
1- Promote the expensive valuable products, if you are an affiliate; promote only good products with the high commissions. Don't forget that you'll pay for every click, so you need good commissions in returns.
2- Target the right market, for example if you're promoting golf products, try to target only countries and cities that contains golf courses.
3- Regularly enhance your ads, change titles and text to test what works better. You will need some time to discover what exactly works for your campaign.
4- Use landing pages, don't send the visitor directly to the sell page, create a landing page included your personal review and the benefits of the products.