Those are some awesome recommendations. Half way through a bookmarking so paused to give a big thank you.

I don't care if I need 2 lifetimes to learn advanced mathematics. I might not even scratch it. It's the journey that counts to me - if I can learn one new tool, one new perspective of looking at problems and the world, I'm a very happy man.

The only person who loses out is my poor wife who must listen to my excitement and then has to go lie down for a bit because it's too much to digest.