Union apprenticeship sign-ups near Jacksonville - first time posting

I heard of an apprenticeship with paid on-the-job training for people changing careers. I am in Jacksonville, in case local advice matters. Classes are in the evening and work is during the day. How hard is the test?

You earn while you learn, but the first year is tight. Plan your budget carefully.

Visit the training centre in person if you can. Seeing the classrooms helped me decide.