I also recommend a book called "An alphabet of the intellectual labour" (азбука интеллектуального труда). It had at least ten editions, I've read the 10th edition from year 1928.
suggested by u/japdlsd at https://www.reddit.com/r/Zettelkasten/comments/1b9wqza/comment/ku8fuv2/?utm_source=reddit&utm_medium=web2x&context=3