I just purchased three "digital" classes from Tech Talk America that I think I am suppose to be able to download. And I am at a loss as how to proceed with them on my MacBook Air. This is what is listed: Photos for Mac 2016 Photos for Mac mp4 = 478.89 MB (DOWNLOAD) Find and Remove Duplicate Photos mp4 = 2251 MB (DOWNLOAD) Photos for Mac pdf 530.5 KB (DOWNLOAD) New to Mac El Capitan Version New to Mac mp4 = 1.40 GB (DOWNLOAD) UPDATED New to Mac 2016 pdf 1.2 MB (DOWNLOAD) Mac Shortcuts 2016 pdf 2.3 MB (DOWNLOAD) My questions are as follows: 1. Do I want to download/save these to the computer, to a USB drive, to iCloud? Don't want to eat up too much space on my internal hard drive. 2. Where there appears to be a choice (Photos for Mac), do I want mp4 or pdf? 3. In either case, to what area of the computer do I download these? Photos, downloads, etc? Or is there really a choice; guess a download goes to downloads? Thanks!