These videos and help files will provide you with Chromebook basics:
Introducing the Chromebook (video) Chromebook - Basic Use (video) Start 6:52 End 9:35 Get to know your Chromebook touchpad (video) Chromebook 101: Trackpad and Hotkeys (video) Chrome extensions and apps (help file) (Chromestore) Chromebook keyboard shortcuts (help file)
You can access your files by going to the app launcher and clicking Files. This will allow you to browse both Downloads and files saved to Drive. You can pin the Files folder to the Shelf by holding the right side of the trackpad and dragging Files to the Shelf.
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