Overdrive uses Drive folders and files as web pages. Each folder you have in Drive is a page in Overdrive - and will appear as a menu item in your Menu Bar. You can also make a page out of a file. To do so, select the file and access Page Settings then check the Top & Side Menu box under Page Visibility - your file will show in the site navigation and become a page.
To create Pages in Overdrive:
You can create new Google Folders and Files (Docs, Sheets, Forms, Slides, Drawings) directly in Overdrive and sync them to Drive, and you can add multiple folders and files in one action, making Overdrive a great way to quickly create Drive folders and files.
To add Content to an existing page set up to show Folder content: