My favourite colour wheel starts with a cool Yellow (maybe Hansa Yellow Light), a cool Blue (I like Phthalo Blue) and a cool Red (I can't paint without Quinacridone Magenta!). Think of printer ink colours and you're on track!
Painting your own colour wheel is an excellent exercise to do if you're feeling stuck or uninspired... or just want to feel like an artist! I freestyle it, starting with a triangle for the three primaries, then the Secondaries (Orange, Green, Purple) are on the sides of the triangle and the Tertiaries between them.
Fun fact, you always name a Tertiary colour with the Primary colour first. So it's 'Yellow Orange' or 'Red Orange'... 'Blue Green' or 'Yellow Green'... not the other way around.
My favourite way to learn colour theory though, is by ACTUALLY PAINTING.