I’m enjoying working through https://www.amazon.co.uk/Mathematics-Its-History-Undergraduate-Texts/dp/144196052X https://www.amazon.co.uk/Mathematics-Its-Histor

I’m enjoying working through https://www.amazon.co.uk/Mathematics-Its-History-Undergraduate-Texts/dp/144196052X https://www.amazon.co.uk/Mathematics-Its-History-Undergradua... by Stilwell Which is a history of mathematics but with serious examples to work on, and may appeal to self-study maths fans.