Career College Infant Food Instructor Certification Course I took this course in 2022. This is a set of 5 books: 3 Infant Food Textbooks Support BOOK Graded Problems There are writings and markings in the books. Please note that this does not include certification or grading support. I studied this when I was worried about my child's picky eating habits. Thanks to this, the variety of foods my child could eat gradually increased. I hope this can be helpful to someone... ! Thank you.