Sure! this is a playlist of a very good pixel artist, covers a lot of themes, MortMort also has great tutorials (especially helpful if you decide to use Aseprite for your art), and last but not least Adam C Younis has a lot of tutorials that cover everything, from beginner stuff to more advanced things. If you have particular questions or need some help you can talk to me and I'll be happy to try and help you out, I'm be no means the best pixel artist, but I graduated as a visual communicator and been working as a graphic designer for +5 years so I know a thing or two about art in general, my discord is joaototti#9423 :)