Union apprenticeship sign-ups near Tampa - any advice?

I heard of an apprenticeship with paid on-the-job training for people changing careers. This is my first time dealing with any of this. Applications close in 21 weeks. Did anyone go through it?

The aptitude test was mostly maths and reading a diagram. Free practice tests online were enough for me.

Bring your transcripts and any proof of work history. They asked for both in the interview.