Appeal deadline questions after an unemployment denial - any advice?

I was told my separation was for misconduct, which is not what happened. There are 14 people counting on me, so I am trying to be careful. I have not done a hearing before and I am nervous. If you have appealed before, what helped you prepare?

Thanks for writing this out. I went through something close to it 9 months ago, and it got easier once I kept a simple log of every call and form.