What next after installing the WM trail?

I am new to WM and BPM and have installed the WM trial version on Suse Linux with the default database.
I assume that the next step is to create something within the WM UI? But what and where?
I have tried to run a startup script to start a service but that is not working since there is no Default instance.
Is there some documentation available to read and start playing with the WM applications to familarize myself with the development of a HelloWorld for BPM?