What books or games would you recommend once I finish reading Tesuji, Attack and Defense, Lessons in the Fundamentals of Go, Opening Theory Made Easy and Fundamental Principles of Go? Thanks.

EDIT: oh, you already asked here: viewtopic.php?p=111120#p111120
and I answered in that thread. Once you will have read the related books and become real world SDK (KGS 4k), see here: viewtopic.php?p=111896#p111896

Actually, in that thread I was asking which of two books I should study. Now, I`d like to know what else I should study once I am done with those.

For the answer, see my message above and its referred threads, except that Graded Go Problems 1 - 4 (or maybe only 3 + 4 or only 1 + 2, depends on your current reading skill) can be also useful if your reading and tesuji finding is not very good yet.

There is not really a book missing from the list in the first post that I would consider "absolutely must read".

You will probably benefit the most from tsumego (both hard and easy and on different topics - life and death, endgame, tesuji) and analyzing your own games (on your own, with your opponent or with a teacher).

As far as tsumego there are really plenty of them available everywhere.

I can recommend you the following books:
http://senseis.xmp.net/?200EndgameProbl ... ingTactics
http://senseis.xmp.net/?200TesujiProblemsKnownAtAGlance
(very well done books, I loved to go though them).

http://senseis.xmp.net/?AllAboutLifeAndDeath
If you want a really thorough understanding of corner shapes. He never tells you upfront what the solution for the diagram is, maybe its ko, maybe seki, maybe to live unconditionally - you will always have to figure it out.

http://senseis.xmp.net/?LifeAndDeathInt ... elProblems
A very good tsumego book, from the God of Tsumego himself.

Best of Kido 2: The Ins and Outs of Life and Death
http://www.hebsacker-verlag.de/best-of- ... -4646.html
If you want some really tough ones - the problems are aimed at 2-3kyu (1 star), 1-2dan (2 star) and go up to 5 stars. I looked into the problems and got some of them right, sometimes I found the key move but didn't cover all variations or got the moveorder wrong.

If you enjoy commented pro games I recommend you all of Zhou Yuan's Books, especially 'Learning from Pro Games'. He understands how to explain playing styles and reasons behind pro moves to players below dan level. 'Learning from Pro Games' is his newest book and contains two old chinese games, which are of superb quality.
And you can't bring up books of commented pro games without mentioning John Fairbairn! 'The go consultants' is a one of a kind!
http://www.hebsacker-verlag.de/the-go-c ... -3208.html

I second Graded Go Problems. They're very varied problems, so you get practice at reading different situations. There's samples on Sensei's that might help with which one you should get.

Edit: Also, if you'd like some lighter reading, I can't recommend Treasure Chest Enigma enough. Very entertaining read. It's my favourite Go book.

_________________
a1h1 [1d]: You just need to curse the gods and defend.
Good Go = Shape.
Associação Portuguesa de Go

Thanks for the advice. I guess I will go with some tsumego problems for now then.

Another vote for Graded Go Problems. Also recommend Get Strong at Tesuji--it's a problem book with a lot of variety and a mix of hard/easy problems (it gives the difficutly level for each problem). Those are my favorite problem books.