Justin Grover and I have started recording and publishing a series of introductory videos on the Analysis Workspace and Freeform Analysis. We'll create and update a playlist as we go, but you can watch the first video here:
https://www.youtube.com/watch?v=iS3KVGtowwA
This is a great way to get started if you've never used Freeform Analysis before. If you have any ideas for topics you'd like to see us record -- perhaps things you wish you had known when you started using Freeform Analysis, or things that have been confusing to you -- post them on this thread and we'll add them to our list!