Apologies beforehand if this is the wrong sub-board.
I recently managed to put together a big online resource that might be useful for both students and teachers.
It is a more or less comprehensive guide for thin layer chromatography. I really like the result and I hope it can be useful for any of you:https://chemistryhall.com/thin-layer-chromatography/
Feel free to check it out, use any of the materials, or share it wherever you like.
Also, feedback is highly welcome!