I've been using it for years exclusively both for personal and work. Currently they have a daily live series on youtube where you can see how Photographers and Designers use the apps. You can ask them questions in those live comments.
Affinity - YouTube
One great thing about the suite is that you can switch between the apps without leaving the document. Meaning when you have a photo placed in a document in Designer or Publisher you are working on, then you can edit that photo in place with Photo without having to launch Photo separately and switch back and forth. It just changes the UI in your current document. Amazing.