What to do after you have finished the particular topic?

Question

After completing the basic how to learn in deep?

Answer 1

There are various resources available on Internet, you can use them to learn more about that topic.
If you are talking about programming and have finished programming in any programming language then you can learn about Data Structures and Various Algorithms.
For these topics you can use solo learn itself for basic knowledge and for advanced you can use various website like "www.geeksforgeeks.com" and many more.
There are also Various online platforms that provides different courses on these topics like Edx , Coursera etc. you can take any course from there.
I hope it will help you.