Yay congratulations and enjoy it!!! Yes I go or when I started doing DF facials it took me more then their mandatory training I went back to their re fresher training a few times to make absolutely sure I knew exactly what to do and how.
I know have worked so well with the DF and the products which give amazing results;
Initially I would say stick to their prescribed facials step by step , don't try be a cowboy and adjust them untill you become more familiar with the actual products and the machine itself.
If you don't have any knowledge of environ I would say that you just study your manual, I know basically every ingredient and why and what is in each product and how each ingredient can and could effect the skin. When you know all this info you able to better tailor make each facial treatment and prescribe their home care routine.
It really is a fabulous product so yay for you