After buying Affinity Photo it appeared that the main source of information on how to use it was found in the extensive set of tutorial videos found at http://affin.co/PhotoTuts
That was a good start, but it did provide an easy way to search for details on a particular feature in Photo. I therefore decided to make notes from the tutorial videos for my own use. I later thought that they may be of some use to others, so I am making them available for download as a pdf file AffinityPhotoTutorials.
Please understand that my notes do not include the latest tutorial videos. The people at Serif appear to be very productive video producers, so expect that my notes may get more out of date over time. Despite that I hope they are still useful as they stand.