Site Logo Block
The Site Logo Block allows you to add or update the logo for your site. Adding this block to your content will display the site logo and will be more useful once you can edit your Theme’s templates.
Once you've added the block, there are further options available in the Settings Sidebar including an option to change the style, modify the display size and automatically adding a homepage link. You can also adjust the width using the handles that appear on logo once it’s selected.