Are you getting paid / commissioned to write these books?
With respect I cannot imagine you are selling large volumes so am guessing that perhaps you are being commissioned?
Could be hobby-level writing as a long-term career investment. Someone who written a whole slew of books will make a good "insta-expert" when altcoins become popular in the mainstream.
Tyke is the first to publish so he has a good head start, hope he sticks with it
props for just saying "NO!" to that big dump coin
now if I may shill a little myself ...
UNO 2013-2015
*managed to move to AuxPow, great community story*
*2016 has a great story too ... we caught BigVern and recovered our coins**
FTC 2012-2013? been around a long time
POT ... the first year was crazy ... reefer madness ... might sell well as a booklet too!
XCP ... the first 2.0
others likely here to stay:
BLK, Blake, Franko, Nova, Prime, Myriad, Digital, Aurora, Quark, World