New HOOPS/3dAF developers should work through all of the Getting Started sections:
Documentation - a review of the HOOPS/3dAF documentation
Installation Contents - a review of the installation directory structure
Creating a Prototype - a simple HelloWorld tutorial that shows how to create a basic application
Defining a Scene Graph - how to map your graphical information to the HOOPS/3dAF scene-graph
Tutorials - hands-on application development examples which cover many HOOPS/3dAF concepts