Where do I go from here?

I am currently working at a Flexible Surgical Equipment Repair Shop. I repair and rebuild endoscopes. I think this line of is actually amazing, and I want to go to school to get certified in electrical engineering so I can work on CT machines and imaging equipment.

My question to you dear reader is, where do I go with this idea? What does the schooling look like?
Am I picking I specialized area that actually needs people?
Thanks ,
An inspired technician wanting to help more people:)