Collection of methods of communication (morse code, semaphore, hexadecimal charts), basic electricity tutorials, basic medicine/chemistry etc. by C_umputer Related: Fiction/easy-reading non-fiction for learning about the 18th or 19th centuries in Britain Any fictional books about living through life while lacking general skills including social skills? Suggest me a book that’s either brothers best friend or friends to lovers Sapphic fiction all around the world? Which verse translation of the Aeneid should I read?