F5 does not create or maintain any official certification study guides. While we used to publish "candidate created" study guides, they were removed because they had become outdated.
There are a number of resources available to assist you in preparing for your exams (Resources for Exam Preparation).
You may also want to review the requirements of each exam on our guide portal: https://education.f5.com/hc/en-us/sections/4404003178779-Exam-Preparation
PLEASE NOTE: No book or class will be sufficient to pass your exam. F5 exams are designed to require experience and practical competency in order to pass. While the amount of time is different for each person, it will require some amount of practical experience working with the solutions to gain the knowledge necessary to pass.