Sublime
An inspiration engine for ideas
Money as debt:
Shermin Voshmgir • Token Economy: Money, NFTs & DeFi

erschöpfend
Andreas Weber • Alles fühlt (German Edition)
THE WORLD OF FINANCE
Erik Banks • Finance: The Basics

THE FINANCIAL PROCESS
Erik Banks • Finance: The Basics
the UK peer-to-peer social lending service, Zopa.