Bare minimum you want to read or search for videos about the following features:
- Sound Lock. (Also look into locking search text.)
- Sound Match
- Projects. (You can use these as 'collections' of sound types as well... Which I do.)
- Tagging. (My shortcut is to add search keywords in the patch description. Has the same affect but takes less time.)
- Saving Envelope/LFO and Arpeggiator shapes
- Saving Effect Racks Chains.
Assuming when you say "trailer stuff" you're referring to distinct sounds like 'signatures', not just braams, pulses, etc... If so I'd personally buy an Omnisphere tutorial. The one linked below goes deep under the hood and gets into some of its more powerful and/or unique features. The guy who created the course does some pretty abstract music so you should also pick up some unique Omnisphere sound design/tweaking techniques.
Oh no...look out... Bill Burgess is back with an Xtreme look at Omnisphere 2! Bill doesn't play by the rules and this course is no exception. So hold on tight &
www.macprovideo.com