ohh then yeah, search a tutorial up! it could help out with why you think your colouring looks muddy ;-) from memory, i think this was pretty good at showing the difference lol: https://youtu.be/57OX8bI8SOI?t=304

also this i guess lol i just think kooleen's videos are pretty intuitive https://www.youtube.com/watch?v=-ahR_D4Y5O0