This will show you the basic steps of how to color manga using cell coloring.
Cell Coloring Cell coloring is basically layer colors, normally going from lightest to darkest to give off the effect of depth and shading. If you want to go further you can use tools like the blur and color dodge/burn tool to give it more of an painted effect.
Hopefully this helped :D
Also if anyone has any advice for me about making tutorial that would be great(This is my first one)
If you have any questions don't be afraid to ask.