Very niche, but deal.ii, the most popular open source library for hand-rolling finite element method code, lays out its tutorial exactly like this https://www.

Very niche, but deal.ii, the most popular open source library for hand-rolling finite element method code, lays out its tutorial exactly like this https://www.dealii.org/developer/doxygen/deal.II/Tutorial.html https://www.dealii.org/developer/doxygen/deal.II/Tutorial.ht...