Appeal deadline questions after an unemployment denial

I was told my separation was for misconduct, which is not what happened. The letter lists a deadline and a hearing process, but it is hard to follow. If you have appealed before, what helped you prepare?

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.

File the appeal before the deadline, even if you are unsure. You can gather documents afterwards. That is the one part I would not wait on.