6. Find out who changed an item
Google Docs allows you to see who made which changes on any collaborative document, with as much or as little detail as you need. To get started, click File, See version history. A sidebar will open on the right side, detailing all of the recent document changes. Every person who edited the document appears in the sidebar, with a corresponding color.
Changes from different editors are highlighted in their assigned color. To restore your document to a previous version, find the version you want in the history and then click Restore this revision under the editor’s name. If you want to see document revisions without the color highlighting, uncheck the Show changes box at the bottom of the sidebar. To exit revision history without making any changes, click your browser's back arrow.
7. Share files among the clouds
Sharing files between Google Docs and Box, Dropbox, or SkyDrive is simply a pain. The standard method to share between them is to download the file to your desktop and then upload it to the other service. A better alternative is to use the online service Otixo, which lets you manage multiple cloud file services in one central location and transfer files among them without downloading anything to your PC.
Once you’re signed up for Otixo, get started by clicking My Cloud Services and selecting the accounts you want to add. After you’ve authorized each service, you can simply drag and drop files between, say, Google Docs and Dropbox.
Otixo currently works with a number of online services, including Google Docs, Amazon S3, Box, Files Anywhere, GoDaddy Online Storage, GMX, Picasa, SkyDrive, and SugarSync, as well as WebDav and FTP servers.
Otixo is free for up to 250MB of bandwidth usage each month, and costs $10 for unlimited access to transfer and manage your online files. It will convert documents saved in the native Google Docs format into .doc files when you move them from Google Docs to Dropbox or another service.
In my tests, Otixo also worked well on the iPad when I transferred files among various “clouds.”
8. Avoid the internet
While Google Docs is fundamentally a cloud-based app, you no longer need an internet connection in order to do your work. To make your Google Docs (as well as Sheets and Slides) available to you offline, go to the main menu of Google Drive, select the settings icon in the upper-right corner, and under the General tab, check the box for Offline.