Oracle University recently released LaunchPad which provides training to clients who are implementing Oracle SaaS products. This is free, unlike Oracle Unlimited Learning Subscription (OULS), and Clients can use this portal to learn and get comfortable with the basics of HCM and other modules.
This honestly looks like a glorified user guide (with screenshots) broken down into multiple sections, but we have to remember that this is targeted towards Clients and the portal definitely makes it easy to consume the user/configuration guides.
Oracle has also gamified this experience. As you complete topics and modules within LaunchPad you have the opportunity to take quizzes to test your knowledge. As you pass the quizzes you will earn points. Completing all of the topics within a module will earn you badges.
LaunchPad is currently available for HCM, Financials, Marketing, Project Portfolio Management and Sales SaaS products.
Click here to access Launchpad: https://education.oracle.com/launchpad/