The website for trainings is http://k12training.com/. You can register/enroll for online sessions "classrooms" under the training catalog, by searching for your desired training by name or category. Once you find the one you want click on the name of the training. Find the date you'd like to register for and select the blue plus icon to see the time of the event. Once you select the date/time of choice select the "enroll" button.
The page will refresh and at the top of the page you'll see a confirmation of enrollment. You will also receive an email notification of enrollment. Once enrolled you should see the course on your current training.
The live link to the event will appear 1 hour prior to the event. You will see a LAUNCH button which will take you to the live session.