If you thinking to learn some extra knowledge in your extra time then here is the 2 best learning platform that personally I used
1. udemy
Learn anything over 2,000 topics - from coding and data science to marketing, Photoshop, yoga,animation and more. New courses, on cutting-edge topics like machine learning, artificial intelligence, and blockchain, are continuously getting new courses
Udemy Pros~
1. Free courses also available
2. Good User interface
Udemy Cons~~
1. No verified courses
2. edx
Learn over 2,000 courses from the world’s top universities
ONLINE COURSES IN SUBJECTS LIKE:
Computer science,Business & Management,Science & Engineering and more
edx pros~~
1. All course are free
2. Courses are made universities