Get WebObjects
WebObjects is available as a part of the Apple developer tools. Sign up for a free ADC account and download Xcode.
The best way to build WebObjects applications is with WOLips. Start with the installation tutorial here.
Get Started
Start by reading WebObjects Overview and WebObjects Web Applications Programming Guide at Apple's developer site. Those documents are really good at explaining the concepts behind WebObjects. Please note that they talk about the old toolset (EOModeler, WebObjects Builder, etc.).
After you have read the two Apple documents, have a look at the podcasts and this tutorial.
There are tutorials to help you learn how to use the WOLips tools here. Check out the podcasts too.
The WebObjects wiki contains best practices information culled from the collective wisdom of the WebObjects community.
Books? We've got'em too. You can find a list here. We highly recommend Practical WebObjects by Chuck Hill and Sacha Mallais.
You can also take classes.
Get Better
Why re-invent the wheel?
WebObjects is completely object oriented and can be enhanced through additional frameworks like Project WONDER. There is also a quickstart guide to help you get started.
Get Together
WebObjects has a supportive and active user community. To contribute or benefit, join the mailing lists listed or visit us on the #webo irc channel on irc.freenode.net.
Profit!
Be sure to tell the billionaire's club we sent you.