Matlab Professional Certification Exam

I've seen the Mathworks website to prepare for Professional level certification exam. But the three pre-requisites are mentioned - 2 Self Paced learning, 1 Instructor online learning. How can I learn that particular pre-requisite course ("Build Interactive apps in Matlab") for Matlab Professional certification without paying for online instructor class? It's much expensive $1000 for one class. Is there other way to learn it?