Apprenticeship openings for electricians and welders - first time posting

I heard of an apprenticeship with paid on-the-job training for people changing careers. I have been trying to stay organised about it. Applications close in 12 weeks. What do you wish you had known?

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

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