I want to study anabelian geometry, but unfortunately I'm having difficulties in finding some materials about it. If you could offer me some books/papers/articles I would be glad.



Anabelian geometry study materials?
There is this very beautiful survey 


Nakamura, Hiroaki; Tamagawa, Akio; Mochizuki, Shinichi


The Grothendieck conjecture on the fundamental groups of algebraic curves


<http://www.math.sci.osaka-u.ac.jp/~nakamura/zoo/rhino/NTM300.pdf>


You could also have a look at


Szamuely, Tamás 


Heidelberg Lectures on Fundamental Groups


<http://www.renyi.hu/~szamuely/heid.pdf>


