Union apprenticeship sign-ups near Baltimore - 6 months and counting

I heard of an apprenticeship with paid on-the-job training for people changing careers. I do not usually post, so bear with me. The application needs a diploma or equivalent, a driver's licence and a short aptitude test. What do you wish you had known?

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

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.