I had the chance to go on a jQuery training course recently, led by Richard Powell. jQuery is was one of my weaker areas, and after Shaun had gone on the course the other month and come back happier than he left, I figured it was about turn I went!
I was impressed with Richard’s knowledge of jQuery, and the way the course was designed to suit the pace from those entirely new to jQuery and with little/no knowledge of CSS or HTML to those who had experienced jQuery largely through plugins.
tl;dr: this jQuery training course is definitely recommended, whether you’ve had no experience of jQuery or, like me, just hacked plugins around to suit your needs!