Don’t put yourself down, there’s a lot to learn editing video. I used Premier Pro to edit but I’d imagine learning final cut pro is just as demanding.
In terms of what I’m saying
Ducking is when the music is lowered automatically. Putting it simply if you have a voice channel and a music channel you can have the music automatically lowered when the voice speaks so the music doesn’t drown out the voice. Audition can do this automatically with you having to set envelope points manually (key frames equivalent in video)
Mastering is when all the other processing is done and one final bit is done. It’s like applying a quality polish to a freshly washed car.
If you’re just starting then don’t be afraid to play around and learn as you go. There’s a lot to learn in Audition but don’t be daunted. Learn as you need to and eventually your knowledge will grow so you know more and more.
If you are just starting out I’m not sure if Mike still offers one to one coaching which may be something you’d consider. I’m self taught but maybe coaching would speed up your learning curve for you.
With your Audition journey take small steps. Learn the basics as you need them. Once you have a good grasp of the basics you can the learn the almost magic you can work with Audition.
With regard the template I think your best bet is to contact Mike or Izabella and ask their advice on which one better suits your needs. Once you buy one you get access to a secret part of this community (as I have my own self created templates I don’t have access so can’t vouch for it’s usefulness myself)