What is the difference between 1600 and 1700?

To be honest, I don't know. I don't even see that much of a difference between 1600 players and 2000 players. My advice would be to just grind games, do tactics, keep learning positional concepts and pretty much just continue what you're already doing. Also I might suggest to start learning about pawn structures and begin studying opening theory more fully.
the revolution has begun

To be honest, I don't know. I don't even see that much of a difference between 1600 players and 2000 players. My advice would be to just grind games, do tactics, keep learning positional concepts and pretty much just continue what you're already doing. Also I might suggest to start learning about pawn structures and begin studying opening theory more fully.
the revolution has begun
shut up
Don't deny it

*KID structure autistic screeching*
anyways guinea pig is correct, pawn structures should be part of your knowledge as a 1700.
Because I told him to do that and it worked hahahaha

How do I learn pawn structures?
Pawn structures - A gm guide (by Mauricio flores rios)

and Is there any know-how to reach 1700 easily?
nope!
I'll disagree. Find a copy of "My System" by Aron Nimzowitch, read it cover-to-cover, and apply what you learn.

You can get to 1700 in different ways, so there's no way to know how a 1700 is better than a 1600 unless we're talking about two specific people, and there's no formula to get to 1700.
The only definite thing is you're required to have formed good calculation habits... you can form them much earlier, but if you haven't formed them at all, then you'll be stuck under 1700 no matter what else you learn or how long you play.
By calculation habits I mean checking whether your opponent's move was a blunder, and checking whether your intended move is safe. Of course everyone does this sometimes, but I mean you do it as a habit, so you do it nearly 100% of the time in nearly 100% of your games.
and Is there any know-how to reach 1700 easily?