When you sign into your chromebook the Classlink log in screen should automatically open. Enter your network username and password. If you've closed the site in a previous session you can find a Classlink icon pinned to your taskbar.

This video provides an overview of the "My Apps" section of the Classlink Launchpad and explains how the screen can be customized. (2:13)

Auto Launch automatically opens up to five apps when you log into Classlink. This allows you to open apps that you use on a regular basis.  (1:22)