Google will provide a good help for your search. You can also join the Economists forum online were you can get ideas on the latest economic events and happening around the world even new books and magazine. If it is crypto currencies economic book you are looking for I have never come across any.
yep. google is the best option in finding books related to your needs. you can search a lot of related books in there but i think most of them are from online stores which you really need to purchased if you want to have a copy, whether it is a har copy or a pdf one...
it so few to have a pdf copy that it is all free to download. especially economics books..