Morning Sara….The files in question will be found in the “extras” folder which you will find when you first unzipped the downloaded theme. Double check that the extras folder is in it and if you still do not see the ones in reference to this topic, let me know and I can email them to you.
For the widgetkit theme style, you have to upload the special theme I made for it using your FTP program and needs to go into the plugins folder where widgetkit is. I’m assuming you saw in the video where it goes but wasn’t sure how to get it there? It has to be uploaded. As for being on a MAC, that doesn’t matter because this is being uploaded to where your WordPress website files are on your site.