Union apprenticeship sign-ups near San Diego - any advice?

I heard of an apprenticeship with paid on-the-job training for people changing careers. It has been weighing on me all week. The application needs a diploma or equivalent, a driver's licence and a short aptitude test. Did anyone go through it?

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

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