Make Your Own Raycaster - Part 1 https://www.youtube.com/watch?v=gYRrGTC7GtA
Make Your Own Raycaster - Part 2 https://www.youtube.com/watch?v=PC1RaETIx3Y
Make Your Own Raycaster - Part 3 https://www.youtube.com/watch?v=w0Bm4IA-Ii8
Let's Program Doom - Part 1 https://www.youtube.com/watch?v=huMO4VQEwPc
Let's Program Doom - Part 2 https://www.youtube.com/watch?v=fRu8kjXvkdY
honestly not the biggest fan of his actual coding style (lol) but he teaches the techniques of 3D rasterization in a way that i understand! definitely handy