Sketchbooks are for experiments with color, layout, and new techniques. I use them for practice. Two or three are in use at a time, until they fill or fall apart. [See Sketchbook Pages] When I use them for watercolor color tests, the paper wrinkles like onion skin, unless it is the extra heavy watercolor book (but I only use that for paintings that I have test painted 3 or 4 times). Nothing fancy in them, just freedom to take risks and make mistakes.
This is the last semester of my art degree, and it finally came time to take that last government class and another section of history… so I added art history and painting. Yes!, I finally have time to get some artwork done — it’s homework!