The best library to use is the one you KNOW best. As you have already experience with jQuery, my suggestion is you stick with it. In any case IMHO it is the bes

The best library to use is the one you KNOW best. As you have already experience with jQuery, my suggestion is you stick with it. In any case IMHO it is the best JavaScript library in any case. Things to experiment with besides jQuery: (01) Base2 (02) YUI These have helped me learn better JavaScript. YUI is an excellent library, but I can't stomach their namespacing, it is just too long for me, whereas Base2 have helped me learn a few things about better object orientated scripting. The best advantage for jQuery for me is that I can remember almost all the methods. I rarely need to look up things and by now, I can also open up jQuery itself and I understand how it is working. The sizzle engine that it currently uses is one of the fastest selector engines.