Hi Bandana,

To learn coding from basic and for free from home you should go to a youtube channel named Apni Kaksha founded by Aman Dhattarwal. Here, on this channel you will get videos for leaning Java, C++, Data Structures and Algorithms for free. And the videos are more than enough to tech you coding.

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!