Got a denial letter for unemployment, what now?, hotel front-desk agent here

My claim was denied after 14 weeks of waiting, and the letter says I have a short window to appeal. This is my first time dealing with any of this. The letter lists a deadline and a hearing process, but it is hard to follow.

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