If you want to know about the ins and outs of more personal cons and scams, the Howdunit series of books are great. Ostensibly meant to help writers get details correct, they are fascinating reads. Dating from the 1990's they predate scams and cons using the web, mobile phones, and other tech, but so many cons even today have roots going back to even the 1800's.

https://www.goodreads.com/series/76228-howdunit-series