Are you trying to add ads to your Blogger blog, but the blog Layout doesn't show the ad gadget at all? Maybe you're running an ad blocker extension (like AdBlock for Chrome or Firefox). Do the following to get going:
- Disable your ad blocker extension on
draft.blogger.comdomains. Otherwise you cannot customize where ads are placed on your blog.
- You will want to see how your blog looks to others without ad blocking. So, whitelist all your blogs so that ads won't be blocked on your own blogs.