I bought that book, thinking maybe it was all the recipes in one book, and we'd just read through it each time we increased a skill and learn the new recipes. Then I saw it said that you automatically learn recipes as you level up.
What was the actual title of the book? Something about 13 recipes and baking and I recall something about flour? Maybe the cupcake maker thing has a certain amount of recipes, and then when you master those, you can learn more from that book?