Hi @m-f7644

Welcome to the Acid Forums!

Mastering tends to mean preparing your audio for ideal EQ, Loudness, balance, etc and is more the a process or artform to go through. You can do all of this in Acid with the right thought about your track as you make it, and potentially the right plugins. Any mastering tutorials you find online likely wont mention Acid specifically, but the concepts will work just fine in Acid..

Or your can just throw your exported audio at Cloudbounce, LANDR, SHNALZ, or any cloud mastering solution. looks at the first two from an audio engineers point of view. You might find it insightful.

How you get your audio out of Acid is via the Render As, or Realtime Render, and this will export your audio essentially as you hear it when you hit the play button.

Bounce refers to rendering a selection, or a track down to audio, and is typically used when people have lots of instruments, samples, and/or effects and rendering it to a single sample to re-use in your project makes sense from a workflow and archival point of view. You can bounce audio down to a clip using the tools -> render to new track. Each DAW does this in a different way, but bounce down is a generally acceptable term for it.

Hope that helps :)