The Newsgroup comp.lang.javascript has some outstanding people posting who answer user questions. Look for Danny Goodman, and a fellow with the signature file that says "Dan from New York City".
Where are other really good javascript sites on the net?
HotSyte
The Connection to that which is JavaScript. This is a very nice site with good scripts and links. The site is offered by Jerry Bradenbaugh.
Gamelan -- THE Place for Java Script and Java on the Net
Insite Computing has a nice list of places to find scripts and they cover CGI as well.
If you're looking for a large collection of relatively small but useful scripts to grab, Timothy's Javscript Examples is a good choice.
WebReference has an excellent site with "Tip of the Week" selections and a repository of tips. The fellow that writes this page is really good with javascript and you should have a visit sometime.
Where are the "official" javascript documentation sites?
Java Script Authoring Guide. This is the official Netscape Java Script Guide. Includes materials prior to Netscape 3.0. See below for the 3.0 changes.
Netscape Guide for New Stuff in Java Script Version 1.1 Javascript as implemented in Netscape 3.0
What's New in Netscape Communicator 4.0 Javascript
How do I use Cookies?
I'm experiencing weird things. Could it be a bug?
Check the Javascript known bugs list to see if you could have run across a problem and might find a workaround. There is a lot of other very useful information here as well aside from the buglist.
How do I hide my source code?
Consider a product called Javascript Scrambler v 1.0. I've never tried it cause I don't want to hide my code but it may work for you.
Why does a lot of code not work on MSIE 3.01?
Microsoft's implementation of javascript in 3.01 is only up to version 1.0 of javascript and Netscape is now at 1.2. MSIE 4.0 will solve that once it is released. In the meantime, I suggest making separate pages for each browser.