Here are a few links of shops, blogs and channels you might find interesting.
Photoshop Keyboard Shortcuts. There are so many I have added a link to a great list of them here: Keyboard Shortcuts
Julie from The Old Design shop offers an amazing range of images for you to use in your work. I cannot promote this blog enough, it is AWESOME! The Old Design Shop is also on Etsy and is really is a treasure trove and you can find it here: The Old Design Shop