Hello Aravindh,

There are plenty of free resources that are available to learn programming languages.Some of the best websites are

1.GitHub

2.Codecademy

3.Tree house

4.Udemy

5.Khan Academy

6.Coursera

7.FreeCodeCamp

8.W3Schools

9.Edx

Also you can practice programming on various sites like

1.Hackerrank

2.Codechef

3.Code

4.Sololearn

5.Code Avengers

6.Udacity

7.GA Dash

8.Hackr.io

9.Code School

10.Coderbyte

11.Learnenough

12.CodinGame

13.Simpliv etc

Apart from this there are various apps in the play store to learn various programming languages like C,C++ and Java.So please do make the best use of it.

Hope this  helps.

All the best!!