Long, detailed article on my use of mostly Linux and free, open-source software to write a large, complex, nonfiction military history book with 100K words and lots of images, tables and citations, covering various software, utilities and practices, efficiency and productivity factors, use of styles, navigation, quotation, annotation, highlighting and sharing tools, pros and cons of LibreOffice, Okular, GIMP, GwenView, Kate, and Octave, Android phone reading through Readera app, notes syncing via KDE Connect, Plasma desktop environment in Kubuntu - session save and stability, Firefox translation capabilities, online search engines - quality, accuracy, generic versus specialized queries, image search, and summaries, some problems and niggles, other observations, and more