<p>I am deploying new versions of java servlets with JRun as the host. I am having difficulty finding good sources for information about JRun and tutorials about how to configure and manage it.</p>

<p>After installing JRun and opening the launcher it can't start the admin server that it creates by default...so obviously I'm running into some issues just getting started.</p>

<p><strong>edit for clarity:</strong> I'm not looking for an answer or help with a specific error but if anyone knows of good sources for information about JRun and how to work with it so I can quickly bring myself up to speed on it.</p>

This is probably going to be difficult to resolve unless you post either the error message from the log file or the list of steps that you took so far.
I have JRun 3.1 configured on my machine so maybe I can duplicate your issue if you give us more information.