Premiere Pro Basics - Audio
Audio
Volume:
Select audio in the timeline, then click ‘Effect Controls’, click ‘Motion’ and change the volume.
Detach:
Right click on the clip. Click ‘Unlink’. You can now move and edit the audio separately from the video.
Import:
Click the ‘Media Browser’ and find your audio file. Then right click the file and click ‘Import’. You can drag and drop audio files from the project window into the timeline from there.