Let's say you have a rambling manifesto scrawled out in a Google Doc and you'd like to share a particularly illuminating passage with your friends or followers. You could share the entire document and add a message in which you explain where to find the crux of your argument. Or you could add a Bookmark and share a link that takes someone to a specific point in your document.
To add a bookmark, first move your cursor to the spot in your Google Doc where you'd to place the bookmark. Next, from the Insert menu, choose Bookmark. You'll see a little blue bookmark ribbon added to your document.
Click on the bookmark ribbon and you'll see a Link and a Remove Link option. Right-click on Link to copy the link to your clipboard or open it in a new tab or window. Now you will have a URL to a specific point in your document.
As an added bonus, Google Presentations works in a similar fashion. Each slide has its own unique URL, which you can send to people so they don't have to click through the presentation from the beginning to see the slide you want them to see.