Here's all you need to do:
- Log into your Blogger account at http://www.blogger.com .
- Visit your blog's Template tab and click on the Page Elements link.
- Click Edit in the Blog Posts section.
- Check the box next to Show Ads Between Posts. You can then select how often you'd like your ads to appear, such as once after every post or once after every other post.
- Customize the ads and click on Save Changes when you're done.
For more detailed instructions, please visit Blogger's Help Center. Lastly, don't forget to check out our blog optimization tips for ways to improve your ad performance.