CodeSmith released a series of videos to help understand the features available in CodeSmith 5.0.  You can view those videos in the following links:

CodeSmith Projects:  http://codesmithtools.com/video/codesmith-projects.html

Schema Explorer: http://codesmithtools.com/video/schemaexplorer.html

CodeSmith library of Videos: http://community.codesmithtools.com/blogs/videotutorials/default.aspx