Thank you for the kind words. I'm not sure I know a less forum-y site for these things. The standard places for knowledge like this are forums: e.g., https://diybookscanner.org/forum/viewtopic.php?f=21&t=3455&s... or https://forum.mhut.org/ or https://dxdy.ru/sozdanie-elektronnyh-knig-f7.html .