Google Docs continues to improve practically every month as new features arise. A good way of keeping up with the additions is to monitor the Google Docs Blog, which the team behind Docs writes.
Less distracting –> Edit Fullscreen [View menu–> Fullscreen. Hit the ESC key to exit.]
Hack the Header styles to quickly add formatting: To create a new header style, simply format your text how you’d like and highlight it. Then go to the Title menu, click one of the right facing arrows next to a header, and select Update ‘heading X’ to match with X being the header number.
Let Docs create the Table of contents – only works if you’ve used the header levels in the Title menu. Insert menu –> Table of Contents
Use Conditional Formatting to change the color of a spreadsheet cell based on the contents. For example, you can have the cell color automatically change to red if the test score is less than a 75. To do this, hover over the column header and click the arrow icon that appears to bring up a menu. Then click the Conditional formatting… option towards the bottom.
Extrapolate sets of related terms. You’ll just have to read the original for this – but it IS pretty cool – useful is another question altogether, though!