The Basic Buttons
The first thing you'll notice once you select a page are the buttons at the top; use them to navigate through the Layout & Design tool:
You can see how your template adapts to different devices by clicking on them - mobile, tablet, desktop are displayed.
Undo / Redo
These two arrows allow you to undo or redo changes very easily and quickly.
Save all your changes and display them on the actual site.
Plus sign (+) button: Use it to add what we call 'elements' (i.e. image placeholders, ad code, custom HTML) to the rows and columns.
Shows you all A/B tests created on that particular page, and if you have never created one before, when you click it a B test appears for the first time.
Cut / Copy / Paste
Easily cut, copy or paste elements from one page to another to avoid having to restyle the same element many, many times. It's so handy.
Next: Global settings