Welcome! I'm a coach and an author.
If you want to improve your rankings in chess or just beat all of your friends, that's the place to be.
I will teach you how to think from the first principles. You will learn how to think and not what to think, and will inevitably achieve all your goals.
https://www.misha.coach/
https://www.chessable.com/the-patient-closed-sicilian/course/47859/