Take the self-paced course - Follow the steps of the course below, A through D. Each is independent so you can skip sections as desired. (To do the exercises on our Training Server you must first register for a Training account, but if you already have access in Author, you can adapt them to your existing site instead.)
Watch the videos - Skip the hands-on exercises and just watch the demos. You can even just focus on topics that interest you. Using this approach you can select from the course offerings or browse the A-Z Index, and then read the associated documentation for more details as needed.