I found these videos today and figured there might be other rookies out there who could benefit from them. In the videos he is using photoshop but I see no reason this information would not be useful to Affinity users.
https://www.youtube.com/watch?v=bBh3DE2OIOw
https://www.youtube.com/watch?v=7SjiqEj2xBk
https://www.youtube.com/watch?v=JJYHxy9H0eE&feature=youtu.be&t=1483
https://www.youtube.com/watch?v=yBNmA1nu-pQ&feature=youtu.be&t=1135 https://www.youtube.com/watch?v=bMYyaWXTDug (really interesting info for printing among other things)
Hope it helps someone