You can also find all our "getting started" resources here. Some of them are highlighted below.
Discover PowSyBl
Go through the documentation and the hands-on resources!
Let's code
Java, Python or command line, just help yourself!
PowSyBl starter for Java
Start experiencing with PowSyBl in Java, bother with Maven dependencies later.
iTools
Download a basic PowSyBl iTools distribution to start using PowSyBl features from the command line! (documentation here)