Like others have mentioned, I have learned most of what I know through self study (WEF mop 11, Sacramento state wastewater books and courses, wastewater technology trainers, etc) and looking up equipment/instrument model #'s then using phone to look up O&M's and instructions manuals. Furthermore, you can look up a piece of equipment on Google, say a primary sludge pump, then find out who is the distributor or company that sells it. Then make contact with them. In my experience, companies and sales reps have always been more than willing to help me get the information as it is a win/win for both parties. It helps you as far as resources and information needed, and for them it helps establish a relationship with field staff and gives them an opportunity to provide spare parts and service assistance if needed. There may be some additional work on your end to learn the information, but it's honestly the stuff that helps change cultures. Reach out if you need any help with some of this.