If you are interested in REST, but don't know how to get started this is for you. I've created a shareable notebook with all steps needed to go from NO REST experience / integration to making a call against your own Blackboard Learn. It should only take you 20 minutes, tops.
At DevCon, I presented on using REST APIs and helped a few people get setup and make calls against their own Blackboard. I combined my presentation with materials provided by Blackboard to walk you through every step. You will need to create a developer account, and have admin access to complete all the steps. You don't need to install any programming language, or know how to use a terminal... at all. You need to be able to hit play buttons, which will run parts of the code line by line.
This updated notebook should have EVERY step you need to go from nothing to making calls and exploring. Hope this helps someone get started with REST, so you can build some cool things or write some cool scripts and then share back with the community.
Let me know if you have any questions or comments, and I'll do my best to answer.