Sketchable seems to be the flagship ‘creative’ Microsoft program, at the moment. It is described as, “Part journal, part canvas,” and is designed to work with touch screen Windows devices. I can’t say yet whether it lives up to the hype, but it is quite a learning curve for anyone used to Photoshop. I would say that it delivers a lot of graphic ability without any seeming difficulty on my Surface Pro 4.
The Sketchable tutorials don’t yet exist but there is a manual and Lynda.com has some stuff.