Theme development

I'm a total CSS newb and I'm wondering if anyone has a good source for a "cheat sheet" style chart for CSS syntax? Something that shows all available options per command.

i.e. for the text-decoration:

h1 {text-decoration: overline}
h2 {text-decoration: line-through}
h3 {text-decoration: underline}

Thanks in advance.

I was wondering if anyone might be able to clear up the differences between a template, a theme, and a skin.

I'm also wondering how css fits into these and what needs to be edited and when.

Any experiences and examples are certainly welcome.

Thanks very much.

I'm encountering an interesting bug in IE6 on my web site, where the background colour for the first block / node on a page doesn't get implemented. If you visit my site http://dash.yi.org and look at the files page for example, you will see what I mean.

I'm using the ADC theme, but I'm lost as to what I can change to fix this. Obviously, the true answer is to use Mozilla, where it renders perfectly. But I'm a perfectionist ;) any ideas?

After discarding the interlaced theme because of lack of support for adding header links and my own limited knowledge, i'm in the task of making my own template this time using the xtemplate.

After making several changes in the css i see that all my changes related to text and graphics work as intended but the backgrounds are not showing in Mozilla 0.9.1 or IE 6.0.28.
The strange part is that if i use the WebDeveloper Plug-in of Firefox and click the Edit CSS then the backgrounds appear. ?:(

There exists a php drupal function to know which user is visiting a page?

thanks

I see that the Theme Tutorial has been removed from the Drupal handbook. I have quite a bit of HTML experience, but not much with CSS or PHP.

I am wanting to learn and would like to know where some good general references might be and some specific Drupal references.

The first project I'm working on is taking some of the graphics elements from:
http://www.impactaction.org
and converting them to Drupal.

Any thoughts?