AllCrafts.net has over 400 free hat patterns with pictures from which to choose. Ravelry.com has a series of filters in the left-hand bar that lets you to find exactly what you are looking for. Just begin by typing in “toque” in the search box on the home page.
Arts and craft stores that sell crochet and knitting products have a section of pattern magazines. Carefully look through the pages to make sure that there are several patterns worth doing before deciding whether to purchase the booklet. There may also be free patterns in the crochet and knitting department, so always be on the lookout for one-page patterns in holders in front of yarn or thread displays. On the actual skeins of yarn or thread there are often pictures of projects; usually the instructions for the illustrated project are on the reverse side of the label. The advantage of buying a skein with a picture of a toque is that the yarn or thread is the right one for the project pictured.
Check out the hobby section in used book stores. The crochet books and magazines should all be together, and there may be pattern booklets that are just for crocheting hats. There may even be some single-page instruction sheets on the shelf or in a box.