Resources
A robust encyclopedia on all areas of philosophy. This resource is pitched at a level that most interested undergraduates will be able to understand. This is particularly useful for identifying important texts related to a topic.
This encyclopedia is aimed primarily at graduate students and professional philosophers. However, an interested undergraduate would get something from the entries, with a bit of work.
A blog on political and moral philosophy.
An extensive, and engaging, podcast on the history of philosophy by Dr. Peter Adamson at the LMU in Munich and King's College London.
A truly beautiful interactive visualization of the 2000+ year history of philosophy.
A site featuring news about philosophy.
An organization for professional philosophers and philosophy students. There are many useful resources here for students.
A guide to the many graduate programs in philosopy around the world. See your advisor if you're interested in going to graduate school in philosophy.