Yes, all of that has changed in the new Blender versions. Instead of “I” it is “K” as Dwayne says. But don’t worry, after you are done with the Blender Basics, what follows is the Blender Fundamentals, and the animation course is up to date with Blender 4.2, so you’ll learn the new hotkeys and other goodies that has to do with animation. Linking up:
https://cgcookie.com/playlists/5071-core-nine-course-fundamental-learning-path
