Chess book suggestions ,which first silman or nunn

Silman's Complete Endgame Course
http://theweekinchess.com/john-watson-reviews/theres-an-end-to-it-all
https://web.archive.org/web/20140708103149/http://www.chesscafe.com/text/review594.pdf
Amateur's Mind by Jeremy Silman
https://web.archive.org/web/20140708094419/http://www.chesscafe.com/text/ammind.pdf
"How to Reassess Your Chess, 4th Edition was designed for players in the 1400 to 2100 range." - IM Jeremy Silman (2010)
https://web.archive.org/web/20140708095832/http://www.chesscafe.com/text/review769.pdf
Understanding Chess Move by Move by Nunn
https://web.archive.org/web/20140708092945/http://www.chesscafe.com/text/review269.pdf
http://www.gambitbooks.com/pdfs/Understanding_Chess_Move_by_Move.pdf
Understanding Chess Middlegames by Nunn
"... For players rates from 1700 to 2400, this book will provide ample study material to help make you a better and more knowledgeable player with sharper skills in all aspects of the game. ..." - FM Carsten Hansen
https://web.archive.org/web/20140627012322/http://www.chesscafe.com/text/hansen154.pdf

http://www.gambitbooks.com/pdfs/Understanding_Chess_Middlegames.pdf
"... Just because a book contains lots of information that you don’t know, it doesn’t necessarily mean that it will be extremely helpful in making you better at this point in your chess development. ..." - Dan Heisman (2001)
https://web.archive.org/web/20140626180930/http://www.chesscafe.com/text/heisman06.pdf
"... The books that are most highly thought of are not necessarily the most useful. Go with those that you find to be readable. ..." - GM Nigel Davies (2010)
"... If it’s instruction, you look for an author that addresses players at your level (buying something that’s too advanced won’t help you at all). This means that a classic book that is revered by many people might not be useful for you. ..." - IM Jeremy Silman (2015)
https://www.chess.com/article/view/the-best-chess-books-ever

After posting myself questions on books and searching in the forum I'd say Silman. Especially the complete endgame course :) don't try reassess your chess yet but start with amateurs mind (not the best first strategy book, still a little advanced) but you did read (I grasp?) my system so why not.

Agree on Silman and starting with The Amateur's Mind. I'd tried Nunn's Mastering Chess Move by Move but switched to Chernov's Logical Chess Move by Move which is more my level and I'd recommend it.

 John Nunn's books tend to be written for the advanced player (>1600 ELO); the same is true for Jeremy Silman's "How to Reassess Your Chess".  At OP's current level, Silman's  "The Amateur's Mind" and "Silman's Complete Endgame Course" would be more appropriate choices.

For more suggestions, check out....

Good Chess Books for Beginners and Beyond....

https://www.chess.com/blog/RussBell/good-chess-books-for-beginners-and-beyond

https://www.chess.com/blog/RussBell

Silman's book are trash overrated product to make the customer happy.I suggest you to look for Yusupov's award-winning book series.

I like silman... for easy explanation

"... [Silman's Complete Endgame Course] has already caught on with the average player in a big way, confirming Silman's status as the king of instructional writers. He writes in a clear and casual style, and time and again has shown the ability to reach those who feel intimidated by the lofty approach that a grandmaster will often take. ..." - IM John Watson (2007)

http://theweekinchess.com/john-watson-reviews/theres-an-end-to-it-all

http://www.qualitychess.co.uk/ebooks/QandAwithArturYusupovQualityChessAugust2013.pdf

http://www.qualitychess.co.uk/ebooks/Build-up-Your-Chess-1-exceprt.pdf
https://web.archive.org/web/20140708103321/http://www.chesscafe.com/text/review699.pdf
http://www.qualitychess.co.uk/ebooks/Build-up-your-chess-2-excerpt.pdf
http://www.qualitychess.co.uk/ebooks/Build-up-Your-Chess-3-exceprt.pdf
https://web.archive.org/web/20140708103659/http://www.chesscafe.com/text/review778.pdf
http://dev.jeremysilman.com/shop/pc/Boost-Your-Chess-1-77p3744.htm
http://www.qualitychess.co.uk/ebooks/Boost-Your-Chess-1-excerpt.pdf
http://dev.jeremysilman.com/shop/pc/Boost-Your-Chess-2-77p3745.htm
http://www.qualitychess.co.uk/ebooks/BoostYourChess2-excerpt.pdf
http://dev.jeremysilman.com/shop/pc/Boost-Your-Chess-3-77p3746.htm
http://www.qualitychess.co.uk/ebooks/BoostYourChess3.pdf
https://web.archive.org/web/20140708103149/http://www.chesscafe.com/text/review834.pdf
http://www.qualitychess.co.uk/ebooks/Chess-Evolution-1-excerpt.pdf
https://web.archive.org/web/20140708085817/http://www.chesscafe.com/text/review843.pdf
http://dev.jeremysilman.com/shop/pc/Chess-Evolution-2-77p3643.htm
http://www.qualitychess.co.uk/ebooks/Chess_Evolution_2-excerpt.pdf
http://dev.jeremysilman.com/shop/pc/Chess-Evolution-3-Mastery-77p3753.htm
http://www.qualitychess.co.uk/ebooks/Chess_Evolution_3-excerpt.pdf

https://www.qualitychess.co.uk/ebooks/Revision&Exam1-excerpt.pdf

I would recommend any silman book.  But I think any gains under 2000 should have tactics as the priority.  If you do 30+ puzzles a day, spending time on the ones you get wrong (figuring out what was wrong with your line, and adding the winning pattern to your brain) you could reach your goal.  

https://web.archive.org/web/20140708104437/http://www.chesscafe.com/text/logichess.pdf

Silman.

Between those two, and at your rating level, I'd go with Silman.