Printables can be great (yay, free goodies!) – and can be awful.
Coloring book publishers and artists give away printable coloring pages as a try-and-buy technique. Oodles of websites offer free printables pages. And artists sell unique ones on their websites or shops such as Etsy. Printables are usually single pages, but you can also find printable collections or books; in fact, many of the coloring books on Amazon are also available in electronic (Kindle) format, with online links to print the illustrations at home. And you can print printables as many times as you want, so you can try different tools, palettes or techniques on the same illustration.