I decided to start a posting with links to free Christian Resources/Bible Stuff on the internets so I have one place to put 'em all. To be updated over time as I find more, or as people send them to me.
Read the Bible Online
Many different versions, totally searchable. Now you've got the Bible at your fingertips during your lunch break at work!
Listen to the Bible Online
If you want to have the Bible playing while you work, play, whateva, as long as you've got an internet connection, you've got it. Many different versions including NIV and ESV.
Bible Study Tools
Bible Commentaries, Encyclopedias, Dictionaries, Maps, etc for free online.
Daily ESV Bible Reading Plans (Web, Email, Calendar, Mobile Phone)
No more excuses - this is so accessible it is ridiculous. Email, google calendar, etc.
Free Seminary Level classes at Covenant Theological Seminary
Over 20 classes that you can sign up for. Once you have a free login, you can access the classes and download podcasts of the class, so you can listen to 'em on the go. Great stuff!
Free Online Access to Every Major Christian Classic
At the Christian Classics Ethereal Library (CCEL)
Seriously. Martin Luther? John Calvin? Augustine? Matthew Henry's Commentaries?
You'll find so much stuff here it is ridiculous. Cheap to buy PDFs.
At google books. Check it out. If you do "Advance Search", you can check "Full View Only", which will give books that you have total access to when you search (as opposed to limited previews)
TONS of books.