Algebraic Functions and Projective Curves  
   Home page of the book by David Goldschmidt. Full text (registration required), errata, discussion forum.
   http://www.functionfields.org/

ArXiv Front - Algebraic Geometry  
   Papers and preprints.
   http://front.math.ucdavis.edu/math.AG

Borcherds' Solutions to Hartshorne  
   Solutions to the exercises in chapter 1 of Hartshorne's "Algebraic Geometry"
   http://math.berkeley.edu/~reb/courses/alggeom/

Computations in Algebraic Geometry with Macaulay 2  
   Edited by David Eisenbud, Daniel R. Grayson, Michael E. Stillman, and Bernd Sturmfels. Full text in DVI, PS and PDF.
   http://www.math.uiuc.edu/Macaulay2/Book/

Grothendieck's Séminaire de Géometrie Algébrique  
   Scanned from the original typescript into JPEG format.
   http://modular.fas.harvard.edu/sga/sga/

Ideals, Varieties, and Algorithms  
   By David A. Cox, John B. Little and Don O'Shea. Errata, solutions, Maple and Mathematica software.
   http://www.cs.amherst.edu/~dac/iva.html

Mirror Symmetry and Algebraic Geometry  
   By David A. Cox and Sheldon Katz (American Mathematical Society, 1999). Errata.
   http://www.cs.amherst.edu/~dac/ms.html

Journal of Algebraic Geometry Online  
   Tables of contents, abstracts and references from vol.11 (2002). Full text to subscribers (TeX, DVI, PDF, PS).
   http://www.ams.org/distribution/jag/