I am interested and would like to attend a CAD program. But could you please let me know the difference on Revit, ArchiCAD or 3d max?

Revit & ArchiCAD are two software’s that use Building Information Modelling Technology, which will provide you all the information you require to construct the design you have prepared in them. Whereas 3dsMax is a software that is used for Design Visualization and the application is vast. But you can only visualize, it will not provide you other technical informations. Revt & ArchiCAD can provide you with floor plans, cut-sections, bill of quantity, material take-off details etc.