Who are your current supplier for hydraulic components and systems?
Ask them to come in and sit down with you to discuss the control functionality, logic and concept.
It's a goodway to start the ball rolling and work at developing a good working relationship from which you will learn a lot.
Make sure you get to discuss this with technical staff as well as sales.
After this you may decide to find an introductory course if you like the hydraulic experience.
Good Luck