To shorten a link while signed in, paste the long URL into "Paste a long URL to shorten..." in the top left corner of the site. Your Bitlink will immediately appear in the Bitly pop-up on the right side of the screen and at the top of your Bitlink list.
Need to find an existing Bitlink? Head to Your Bitlinks and you will see the click counts on your Bitlink and the option to customize the link by clicking on the pencil.
Learn about other ways to shorten a link, like our Chrome Extension and Bitmarklet here.