Recommendation for algebraic number theory books beyond a basic introduction

Question

I have studied some basic algebraic number theory, including Dedekind theory, valuation theory, and a little local fields. Now I am thinking to study more and deeper, and hoping to study class field theory, so please help me which book should I choose?

The teacher told me that I should read Lang's or Neukirch's, but I don't know which is better and to choose, or if there is a better one?

Answer 1

Don't know about your books, but Artin's book is thought to be a good preparation.

Answer 2

There is also Weil's Basic Number Theory, Cassels-Fröhlich Algebraic Number Theory, Serre's Local Fields and the lecture notes http://jmilne.org/math/CourseNotes/index.html of James Milne.