Jquery is an excellent cross-browser JavaScript library that adds flare to your HTML by simplifying client-side scripting. Just its 24kb minified version is enough for rapid web development that’s sure to change the way you code and use JavaScript.

Here’s a bunch of links  for you to get started and keep going:
Jquery Tutorials
jQuery Fundamentals by Rebecca Murphey
jQuery for Designers
Improve Your Skills: 25 jQuery Beginner Tutorials Roundup
How To Learning jQuery
Jquery UI Demos & Documentation
jQuery for Complete Beginners
13 Awesome CSS and jQuery Navigations for Free
Creating a “Filterable” Portfolio with jQuery
10 Cool Websites with Amazing jQuery Effects
The Total Newbie’s Guide to jQuery: Select Elements and Manipulate CSS with jQuery
Top 14 jQuery Photo Slideshow / Gallery Plugins
10+ jQuery photo gallery and slider plugins
37 Phenomenal jQuery Plugins and Demos for Developers

Got a great Jquery resource as well? Do share! =)