is there a exam traning or guide ???

Use the Official F5 101 blueprint to ensure you're learning all the up to date subject areas: https://f5.com/education/certification/blueprints/101-ad-fundamentals-exam-blueprint

F5 University is also a good place to lean about technologies, concepts and protocols http://university.f5.com

When I did 101 (a few years ago now) I used the following site which may still be of value: http://veritablenetworks.blogspot.co.uk/2012/11/f5-application-delivery-fundamentals.html

Refer to below article for various exams on f5: https://support.f5.com/csp/article/K93611383

Practice exams are also available to registered candidates. Before you can take any of the exams, you must enroll in the program http://certification.f5.com/. Once you do that, you will be eligible to take exam 101 in production, as well as get access to all the practice exams.