I fell in love with Dortmund with Klopp, but the entire club history is just amazing.
I would strongly recommend that book: https://www.amazon.com/Building-Yellow-Wall-Incredible-Borussia-ebook/dp/B079RMHDJP/ref=sr_1_1?dchild=1&keywords=yellow+wall+dortmund&qid=1623907343&sr=8-1

Hope you enjoy! YNWA