Step 1: Download the Wwise launcher from the link below. From inside the launcher, download Wwise version 2017.1.9.6501.
You also probably want to use audacity to convert audio files to the .wav file format, because that's what Wwise requires. The download link is below.
Step 2: Using Wwise version 2017.1.9.6501 create a new project, and uncheck all of the asset groups, none are required for our SoundBanks.