Hi everyone.I am about to be trained on how to remove R22 refrigerants for recyclin.I was hoping for some pointers or stuff that I should look for on the web maybe to better follow the training.Many thanks in advance

Follow the training and pay attention to all that is done. Use Google as a search engine for more info.

The manufacturer's instruction manual and sell sheet is the real place to look.
There are various options available depending on the machine.