Two of my favorite online resources are Christian Classics Ethereal Library and Precept Austin. These two alone can provide more good reading than most of us will ever do. I also enjoy Bible Gateway for easy access to various translations.
Gone are the days when a pastor needed a vast personal library. Today all a pastor needs is a good internet connection. Although gathering good books is still a good idea, the present and the future are about navigation more than information, knowing how to find what you need more than possessing it on an office book shelf.
The screen has replaced the page. I can't say I'm thrilled with it, but there is no going back. I've always been an early adopter when it comes to technology, so let us go, taking our learning and our message to the digital world.