Ah, so you have made it to the "model" section of Lupica's Mineralogy.  The "models" are actually scientific orgami.  Print out the pages and with patience and practice you will be able to produce some nice 3-D crystal models.  While I sometimes refer to these as forms and other times crystal models, they are a mixture of both.  Some of the "forms" are not strictly speaking crystal models (and vice versa).

Confused,  Don't be! Just print, cut, fold, tape and have fun doing science.

Isometric Forms

Hexagonal Forms

Tetragonal Forms

Orthorhombic Forms