At this point, you will have received the script from the client and are set to record the voice-over in your own studio or a local recording studio.
ProTools is digital audio recording and editing software.
The 'editing' view allows you to record and edit various 'takes', copy/paste and apply special effects.
The 'mixer' view allows you to balance the volume of the various recorded tracks, mix elements in and out as well as apply digital processing.