The above tutorials have given you some sense of the power and customization abilities of Movable Type. Of course, there is much more that the system can do. Some of these features were described in the introduction to Chapter 5 and others are described in the online documentation.
The definitive reference guide to Movable Type is the manual, available in the distribution through the Help button in the top navigation. It is also available at http://www.movabletype.org/docs/mtmanual.html.
If you are having trouble with the system, support forums are available through http://www.movabletype.org/support/.
For some of the features that will be in future versions of Movable Type, see the section of Chapter 5.