There are 2 basic types of watercolour paper: hot-press and cold press. It’s easy to remember the difference. Hot-press is smooth with no texture – essentially it has been ‘ironed’ flat by the hot press machine. Cold press has some texture in the surface. The amount of texture and pattern of it will vary with brand. Hot press is great for those who love little details. Cold press is more popular because a lot of painters like the added texture feeling that cold press give. Cold press will also accentuate the granular effect of sedimentary pigments. Take time to experience both in order to see which suits your painting style the best.