Tutorials & Courses
Curso de Lingua Galega - Online course with exercises.
Galician Morphology & Syntax - Grammar tutorial.
Interactive Galician Course - Downloadable Galician course.
Interesting Reading Practice
A Nosa Terra - Online news.
Logos Children's Library - A handful of children's stories in Galician.
Project Gutenberg - Currently offers one online book. Hopefully more are on the way.
Wikipedia - Wikipedia in Galician. If online news isn't interesting enough for you, you can search for whatever you like on Wikipedia.
Things To Listen To
Global Recordings Network - Provides a free Christian audio recording. A great resource.
Son Galicia Radio - Online radio from Galicia.
Other Galician Resources
Galego.org - Lots of information about the Galician language..
Verbix - The best online verb conjugator I have found. Just type in a verb and Verbix will completely conjugate it for you.