Two weeks ago I started a course in bookbinding. After two lessons we got the assignment to make a simple book at home. Despite a heavy cold I managed to make two. Too bad that I missed the next lesson, though...
The first one was based on the exact measurements we were given. The pages are just plain printing pages, not very inspiring.
The broad version is made with thicker paper (200 grms), with a light texture, good enough for drawing. I like the broader shape, it makes it easier to draw landscapes. It is quite thin, but also light. Very handy to take with me on trips.
At the end of the course I will probably end up with a lot of sketchbooks in all kinds of sizes and weights...