Blogger Layout is the layout that you use in the blog, which is called the layout.
How to Add Widgets?
1. First you go to Layout Options from your blog's dashboard.
2. Go to Layout Options From here you can change logs, blog icons and add widgets / adwatis / footer widgets / header widgets etc. to sidebar.
3. Now you can click Add a Gadget.
4. You will see a popup box on the image below.
5. You can add any widgets from this box. Suppose you add the pageview count of the blog's pageview. You can find out the widgets of this popup page and click the + button next to it.
6. Now you select a style like your choice and click the Save button with the title you want it to show in the name.