Information about becoming a philosophy major:
What jobs can a philosophy major get?
Philosophy: A brief guide for undergraduates (a pamphlet from the American Philosophical Association, which includes information about job prospects for philosophy majors)
Information about majoring in philosophy (Information from Ralph Kennedy’s page at Wake Forest)
An article by the American Bar Association on preparing for Law School
Recent NYTimes article about the advantages of majoring in Philosophy

Some online resources for undergraduate philosophers:

How to write a philosophy paper (Some good advice on how to write a philosophy paper. Taken from James Pryor's website)
How to read a philosophy paper (Also from Pryor's website)
A philosophical glossary for beginners (Philosophical vocabulary explained. Taken from Pryor's website)
Jonathan Bennett's translations of Early Modern Philosophy texts
Stanford Encyclopedia of Philosophy
The American Philosophical Association
Keith DeRose's Epistemology page (lots of information about epistemology)
David Chalmer's "people with online papers in philosophy" page (an enormous list of links to philosophers with online papers)
Garth Kemerling's Philosophy Pages (lots of information, including a dictionary of philosophical names/terms and a survey of the history of western philosophy)
Mind Papers: A bibliography of papers on the mind and the science of consciousness
Philosophical Papers: Online philosophical research
Google Books


Some interesting philosophers with online papers:
Ned Block
Alex Byrne
David Chalmers
William Lycan
Alva Noë
James Pryor
Michael Tye

 
Some online journals:
Notre Dame Philosophical Reviews (book reviews)
Philosopher's Imprint
PSYCHE (an interdisciplinary journal of research on consciousness)

Some Philosophy blogs
Fragments of Consciousness
Brains

Other
Other