Union apprenticeship sign-ups near Spokane after 11 years as a school bus driver

A local apprenticeship programme is taking applicants for the next intake. I worked as a school bus driver before this. The application needs a diploma or equivalent, a driver's licence and a short aptitude test. 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.