Most of the videos below were created by Tony Wayne, a high school physics teacher. Although he makes the pieces a little different from the photographs in the instruction manual, the videos are very useful. The templates with instructions and lessons are available at http://www.teacherspayteachers.com/Store/Andrew-Gatt.
Making Columns
Making and Attaching Beams
Diagonal Supports
Straight Track
The Loop
The Shelf
Sharp Curves and Wide Curves
The Merge
The Funnel
The Switch