For the nubuck

Your shoes should be waterproofed with an adequate liquid.
You can find this product here.
You have to brush your shoes with a gum with deer.
You have to make your shoes dry.

For fatty leather

To nourish your shoes in-depth, you have to apply a colourless waxing fatty on them.

For the smooth leather

Your shoes should be brushed.
You have to apply one cleaning colourless which adapts to all the colors.