Trades apprenticeship applications open in Denver - what worked for you?

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 2 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.