AKA: Griddlers, Hanjie, Picross
Original, paper version of nonogames. Simple Logic Puzzle based around uncovering a drawing by clues.
I've never bought a book of puzzles, but keep meaning to. Some ones I've found:I've been doing puzzles in this book called Nonograms for Experts: 50 Nonograms for Professionals from Mindful Puzzle Books, and it's good so far. Still would like to try these: