introduce sb. to sth.? 感觉这句话反了吧

没有错。 introduce someone to someone 是介绍某人给某人， 而introduce someone to sth 意思是使某人初次了解、体验某事 。所以这里 introduce you to ActiveMQ = provide you with a new opportunity to learn ActiveMQ， 或者 help you experience ActiveMQ for the first time