What is a Bookmark Bar?
First, you need to enable it, by clicking on your 'Customize and Control Google Chrome' icon in the top right corner of your browser. Click Bookmarks then choose Show Bookmarks Bar.
You may be given the opportunity to import bookmarks from another browser. You can do that if you choose, or start from scratch by simply going to your favorite sites, clicking their favicon (little picture beside their web address), and dragging it down to your bookmark bar.
Editing Titles: You might notice that when you first enable your bookmark bar, it shows the favicon as well as the title of the website. This takes up a lot of space, and is generally not needed. Here's how to fix it so that only the icons or specified text shows up. Just right click on the favicon on your bookmark bar. Click Edit. Now you can delete the name, or give it a few letters so it won't take up so much space on your bar. Repeat as necessary.
Rearranging Favicons: Favicons can be rearranged by dragging and dropping them into place. You can even separate them into groups by renaming the last favicon in the group with a period or slash mark.
If you'd like to add a favicon to your own blog, please see Cara's post at Teaching My Calling.