Using the link within "Guess the Flag: Introduction", I can navigate to the folder "SwiftUI/project2-files/ and see the 24 png files that I need to download but can't find any way, other than going into each individual image and downloading, of downloading the folder or the set of files. Am I being thick.

I did find If you’re not sure what to download, use this link: https://github.com/twostraws/HackingWithSwift/archive/main.zip – that’s the zip file for all my project files. This downloads a 166Mb file but implies that it is possible to download the individual project folders.

You will need all the resources at one point if you doing the 100 Days of SwiftUI. So download the whole folder and save somewhere and when you need the resources for a project it already there!