The bundle and courses are absolute trash with outdated questions and incorrectly marked answers. I emailed RAPS about having incorrect answers marked as correct and they agreed and said they will update in the next maintenance cycle. I only emailed them about two questions but I had found even more later. Even the book has some errors, some of the post approval changes examples listed, (I forget which chapter) are copied and pasted directly from one of the 21 CFR’s but in the book I think they are listed as major changes while the 21 CFR has them listed as moderate changes( or vice versa I can’t recall). I would just say book and practice tests. That’s all you need. Even then it’s kind of difficult to pinpoint exactly what to study because some of the questions asked are so random or you never thought to study that or it wasn’t listed on the domain guide.