Top 10 perfect ways to get good knowledge in programming is by :-

1. Build app.

2. Build apps.

3. Build apps.

4. Build more apps.

5. Build more apps.

6. Build more apps.

7. Build more apps.

8. Build more apps.

9. Build more apps.

10. Build more apps.

Bonus+

11. Build more apps

By app I mean build stuff that you want to create. Make app that is useful or not, but make. Example you want to make tic-tac toe game. Think and break down the game in simple steps . First, I have to make grid. Second, I have to check in which grid did user clicked.Third, when the user clicked it should be show some interaction. Fourth app's logic and it is the hardest part in all app. Try yourself to make game logic , if you can't then research in Internet read all blogs, sites, Github. Ok, finally you made game logic. How can I display my logic on my app? - do code.But I am not able to do good code then how I can? - do code.

Please don't afraid to do bad code. This is like your life if you want success do mistakes.

If you don't belive with my ways to get good programming knowledge.Then, fine.