Reddit reviews A Practical Guide To Appellate Advocacy (Aspen Coursebook Series)

https://www.amazon.com/Practical-Guide-Appellate-Advocacy-Coursebook/dp/1454830964

I like this one. We used in in a practicum, and I use it for appellate style brief writing and moot prep.

From my experience (Giles Rich IP) most moot courts and oral arguments follow a specific structure that you should base your argument on.

Introduction
Roadmap
Argument 1
Argument 2
etc.
Conclusion

Typically you want to prepare for questions from the bench. Practice being deferential to the bench. You get asked a question, the first words should be: "No/Yes, Your Honor . . . " or "I don't know your honor, may I submit a supplemental brief." The introduction and conclusion should be memorized. A strong trial notebook will help, but something simple like a manila folder and note cards taped on the covers for cases, references to the record, etc.

I cannot emphasize how structure based it is. You need to do it the way they want to for the points.
This book will get you far. A lot of people get DQ'd or lose points on poor briefs. Look at your local rules and follow them precisely. There are a lot of nuances a coach could help with.

Lastly, ask your professors or look for local coaches. A lot of people might offer to coach a team since it looks good for them too.