Front-end Libraries Certification

Hello fellow coders!

I have recently completed JS Algorithms and Data Structure Certification. I’m taking currently Front-end libraries certification. I started yesterday and I have finished three courses so far; Bootstrap, jQuery and Sass. But the problem is that those courses are not profound enough they are too simple. I’m wondering if that’s enough or I need to take other courses about those libraries.

Please share with me you opinion about this!