I see a lot of talk about how JQuery provides a lot of new functionality and improvements to the UI for DNN. But I haven't been able to learn how to use it. I have searched the forums and it seems that the entries all seem to start with a level of knowledge above the beginner. I would like to know how to start at the beginning. And frankly all the talk about the different ways to use it depending on the DNN version you have is dizzying.

For example, I found a page that has some JQuery that could be used to open external links in a new window. I need to do this on one of my pages so I want to try it. But how is it done?

The website with the code  http://snipplr.com/view/50715/ has the code to use to open external links in a new window. 

1. // open external links in new window (checking domain first)
2. jQuery("a[href^='http']:not([href*='" + document.domain + "'])").each(function () {
3. jQuery(this).attr("target", "_blank");
4. });

Are there other steps to "turn on" the JQuery besides this code?

If it matters, you can know that I will use DNN 6.01.02.

If you are aware of something already written that explains the basic how-to's or have some simple advice I would sincerely appreciate your guidance. Thanks for getting me started.

 Not especially for DNN, but have a look at this: jQuery Succinctly

Best wishes
Michael