1. Go offline
Google Drive may be cloud-based, but with a quick two-minute setup, you can view and edit your documents even without an active connection. The only requirement: You need to be using Google's Chrome browser.
In Chrome, first install the official Drive app. Then, go to drive.google.com, click the "More" option in the left-hand menu, and select "Offline." Click the button to enable offline access for your computer, and -- ta-da! -- you're all set.
It's worth noting that you'll need to enable offline access individually for every computer you use. (One exception: If you use a Chromebook, offline access is automatically activated by default.)