Grab a cylinder. Use the Trim brush to cut flat facets into the glass. Use Move to taper the neck. This teaches you how to create rigid, non-organic shapes.
: Dynamic tessellation technology that allows you to sculpt without worrying about polygon distribution. Export Options Download Zbrush Core Mini
You can no longer find an official download link for ZBrushCoreMini on the Maxon website Existing Users: Grab a cylinder
: A unique feature that saves your 3D model data inside a standard-looking 2D GIF or PNG file, which can then be reopened in ZBrushCoreMini by others to reconstruct the 3D mesh. 3D Print Ready Download Zbrush Core Mini