Sun technology evangelist Sang Shin and other volunteers will start another free, online course on Ajax programming on October 15. The course, which will last for 18 weeks, include numerous topics: Ajax basics and development tools, JavaScript, Dojo Toolkit, jMaki, portlets and portals, Ajax design patterns and best practices. Registration is simple: just send a blank email message to ajaxprogramming-subscribe@googlegroups.com.Sang also offers other online courses—Java EE programming, Web services programming, Sun Java System Identity Manager—all free. Do check them out.