Trades apprenticeship applications open in Boston

I heard of an apprenticeship with paid on-the-job training for people changing careers. Applications close in 19 weeks. What do you wish you had known?

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

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