I have 800 Elo and I consider myself to have a grasp on tactic concepts such as skewers, pins, forks, etc. usually seeing this basic tactics with a two moves depth (which are, of course, sometimes wrong). Is this book useful for me? Maybe it's for people too new to chess or maybe too advanced.
Who can determine the answer for you?
Only you.
That's why people traditionally went to book stores and picked up books to look through them to see if they have material that is interesting.
Perhaps you can find an excerpt online.
I have 800 Elo and I consider myself to have a grasp on tactic concepts such as skewers, pins, forks, etc. usually seeing this basic tactics with a two moves depth (which are, of course, sometimes wrong). Is this book useful for me? Maybe it's for people too new to chess or maybe too advanced.