What do you wish you knew about your job when you first started out?
Instructional Designer in Minneapolis:
"Complete An Internship And Certification."
If possible, complete an internship in ID but understand that each company's idea of instructional designer is different. Often an ID will also be expected to train via stand-up or web-based.
Obtain a certification. Many jobs may add a certification as "desired." Especially obtaining a certification through ASTD is highly credible.