India ink seems easiest way to start. Will it be a problem if it's mixed with shellac? I can see only such ones here in Poland.
I see I can buy Winsor & Newton: "Liquid Indian Ink which is the traditional formula of the Chinese sticks and is not water-proof, and Black Indian Ink which uses a shellac binder".
I understand Liquid Indian Ink without shellac should be better or it doesn't really matter?