I am an undergraduate. I am interested in algebraic number theory.
(1) I have read the first 5 chapters of the book Number Fields by Daniel A Marcus.
(2) I have read the first and third chapter of Koblitz's book on $p$-adic numbers.
(3) I have read the first two chapters of Janusz's Algebraic Number Fields and also some parts of the fifth chapter on class field theory.
Very often what happens with me is, I learn something properly only when I have to use it frequently while studying something more advanced. (For example, I got a better understanding of metric spaces when I took a course on functional analysis.) Keeping this in mind, I think it will be a good idea to read some papers in algebraic number theory. This will help me to consolidate whatever I have learnt so far. Also, it will help me to learn some new material.
Looking at my background, can you point me to some research papers which are accessible to undergraduates ?