For people wanting to get started with Activiti, Andrea Flesca has created an article introducing the Activiti Engine, Activiti Explorer and Activiti Designer. You can use the following link to read the full article:
Friday, December 13, 2013
Today we have published the 5.14 release of Activiti to Maven central. This means that you don't need to configure the Alfresco Maven repository anymore in your pom.xml and can just fetch all Activiti JARs from Maven central. Hope this helps to make it even easier to add Activiti to your project. Thanks to Sonatype for helping to get the Activiti artifacts published!