Most things you will be able to find back. Settings are organized differently. If you cannot find a particular setting. Does not matter much. Try to follow as much as you can. Save the project, then start tweaking till you like it. It is not possible to re-create exact the same. Different blender version different default values of nodes, etc.
As for the hair info node, in another post on CGcookie, use a “curve info” node. Some nodes you can replace or re-create with a combination of nodes, or the setting is re-named. Also possible. I am using Blender 4.5.7 LTS, and could re-create the results.
This might be a short course, but it sure packs punch for this tiny one! I actually like these kind of courses. Short and precise. Not follow a video for hours to get results. Hope you guys make more smaller ones.