user19218: I know the rules and played with my friends but without any knowledge of opening tactics etc. And all material I could find online was not in an ordered manner . So can you suggest some courses I can enroll myself online which cover the basics going all the way to the advanced level ?( I am an absolute beginner)
P.S.: Free resources would be more appreciable because I am just a student . Thanks

user18908: The Elo rating system is quite simple in an essence, and functions as such:
By beating a higher rated player, you accumulate more Elo rating points than if you were to beat a lower rated player. (Elo rating points basically measure your chess aptitude).
As for the other aspects that you have mentioned, I would recommend that you visit chess.com and lichess.com.

19218: <p>I know the rules and played with my friends but without any knowledge of opening tactics etc. And all material I could find online was not in an ordered manner . So can you suggest some courses I can enroll myself online which cover the basics going all the way to the advanced level ?( I am an absolute beginner)</p>

<p>P.S.: Free resources would be more appreciable because I am just a student . Thanks</p>
 18908: <p>The Elo rating system is quite simple in an essence, and functions as such:
By beating a higher rated player, you accumulate more Elo rating points than if you were to beat a lower rated player. (Elo rating points basically measure your chess aptitude).</p>

<p>As for the other aspects that you have mentioned, I would recommend that you visit chess.com and lichess.com.</p>
