I finally got a chance to test ZBrushCore MINI and I love it! definitely the best way to get started for someone new to the 3D sculpting world. Here is a sketch I did while recorded a tutorial:
The intro to ZBrushCoreMINI is already up in the ZBrushGuides here.
and of course here is the iMage3D of this sample old man head in case you want to download it and work on it a bit more: