Hello, I suggest you this youtube channel it is AMAZING.
https://www.youtube.com/channel/UCM-ONC2bCHytG2mYtKDmIeA
One of the best Grandmasters is Akobian, you will learn a lot from this guy.
Yassir Serawan is another grandmaster who has great skills in strategic thinking. Check their playlists and check the lessson from chess.com android app and you will be better very soon.
I started playing chess 2 months ago, and my skills greatly improved due to these videos.
Have fun!
I m new to chess Started playing since about a month( may be , I yet don't know about site much) I have been unable to defeat computer above lvl 5 Any tip?