[mhh__]

Chemguide is aimed at A-level students, e.g. 17 year olds: Doing the math is out of the question, sadly.

[acqq]

But even before 17 I‘ve learnt with the orbitals diagrams like here:

https://chem.libretexts.org/Bookshelves/Physical_and_Theoret...

Which I still find more informative than the drawings on the original post page.