https://30desk.art/for the ladies that want to get better at drawing this website seems to be really good for encouraging practice and improving your fundamentals without having to think about what to draw or getting lost in brushes/tools/layer management
i could imagine if youre not familiar with drawing programs it might not be super intuitive without a tutorial, but if i were using it personally i would probably start off by sketching something out on the lineart layer and then putting in a base color on the base layer (switch brushes by clicking on the super secret dropdown on the Brush button) or go straight to blocking out the shapes on the base layer and then drawing the lineart above it (or not at all !), the color layers clip onto the base layer