A Brief Introduction to Classical and Adelic Algebraic Number Theory: By William Stein. Text in HTML/DVI/LaTeX/PDF/PS.
Algebraic Number Theory: Course notes by Robin Chapman, University of Exeter, May 2000.
Algebraic Number Theory: A course by Keith Matthews. Lecture notes (GIF slides), bibliography, web resources.
Algebraic Number Theory and Automorphic L-functions: Lecture notes by Ching-Li Chai, University of Pennsylvania.
Binary Cubic Forms and Cubic Number Fields: Activated text by Henri Cohen.
Class Field Theory: Lecture notes by Kiran Kedlaya, UC Berkeley, Spring 2002.
Discriminant Exponent Calculator: Java applet computing the maximum exponent of a prime in the discriminant of a number field of given degree.
Galois Groups and Greenberg's Conjecture: Ph.D. thesis by David C. Marshall, University of Arizona, 2000.
Multiplicities of Discriminants: Formulae and tables for the number of non isomorphic fields with a fixed signature and Galois group sharing a common discriminant.
Notes for Dick Gross' Algebraic Number Theory Course: Taken by Sean Sather-Wagstaff, Utah, Spring 1999. In PS and PDF formats.
Quadratic Fields Research: Notes by Richard Mollin.
Relation Modules for Conjugate Algebraic Numbers: Project at the University of Innsbruck to understand the algebraic relations between the zeros of a polynomial. Papers, people involved.
Seminar in Algebra and Number Theory: Lecture notes by Jerome Huffman (TeX,DVI,PDF).