Google
 

STEP TWO: Choose Space for Your Ads.

Next, you need to choose where to put ads in your blog, but first, click at the "Add a Page Element" menu.

Note: Please click on the image to enlarge for better preview.


You'll see this pop up menu appear. Click at the HTML/JavaScript's "ADD TO BLOG BUTTON".
Note: Please click on the image to enlarge for better preview.