Tablets are better than a smartphone for drawing. They’re also cheaper than a pen display and have a smaller learning curve than a pen tablet. They’re also a bit more portable and tend to have better battery life than a laptop. I also like using a tablet for reading comics.
Cinnamon or Xfce are more similar to Windows’ user interface. Between those two, Xfce is more lightweight than Cinnamon. MATE is more for people who liked GNOME 2 and want that interface over what the current GNOME is.
Cinnamon would probably be the most friendly as a new user, but I personally haven’t used it in years and I’m not familiar with its current state.