Just check out what power of 10 can do.

http://www.kottke.org/06/06/powers-of-ten

Found a very interesting website, which allows measuring connection speeds between you and a remote server. Test servers are located all around the world.

Just have a look, it is worth it: http://beta.speedtest.net/

Found a great resource that explains CSS in easy to understand way. Explanations of different CSS aspects are short but complete. Good resource for beginners who want to get solid CSS foundation.
http://www.hwg.org/resources/faqs/cssFAQ.html#cascade

IE has an interesting bug, which causes images to reload from server each time a mouseover event is triggered. There are several clientside ways around this problem they are described here: http://www.fivesevensix.com/studies/ie6flicker/

But the real working solution is to change .htaccess on the webserver. Here is what needs to be done: http://dean.edwards.name/my/flicker.html