Espalier Pruning of an Apple Tree.
Check out this video for a fantastic demo on how to train an apple tree as an espalier form https://www.youtube.com/watch?v=VYpGA27htUw
How to Prune Blueberry Bushes
Here is a great video from the University of Maine, on how to prune blueberries https://www.youtube.com/watch?v=fm6ZfpGy5oQ&t=1s
And just for good measure, here is a video on 7 mistakes to avoid when growing blueberries. https://www.youtube.com/watch?v=iKdi5Pie2VI