I made these puzzle packs back when geometry nodes were just starting getting implemented but I think they are still a good introduction to anyone who wants a more playful approach to learning geometry nodes so I figured I should post them here.
And they are free!
Pack1 for Blender 3.0 (not tested on other 3.x versions)
Pack 2 for Blender 3.1 (not tested on other 3.x versions)
Pack 3 for Blender 3.3 (not tested on other 3.x versions)
Each pack is a Blender file that contains a set of challenges, and each challenge is structured like this:
A collection containing two sub-collections; one containing the puzzle and one containing the solution
In the puzzle collection there is a mesh or a curve with a geometry nodes modifier attached to it, and in the node tree all the nodes necessary to create the solution are laid out.
In the solution collection there is an identical mesh or curve with a geometry nodes modifier attached to it where the nodes are already connected as intended (used both as a visual reference and as a cheat sheet if you get stuck!)
The challenge is then to connect the nodes in a way that creates the solution!