The FINTECH Book | 1,613 followers on LinkedIn. The FINTECH Book is the 1st globally crowd-sourced book on FINTECH which compiles the insights and stories of the FINTECH community. A front-line industry insider's look at the financial technology explosion powered by FINTECH Circle's global fintech community. The FINTECH Book is your primary guide to the financial technology revolution, and the disruption, innovation and opportunity therein.