Comment on SaraKpn's profile

It doesn't matter. Try out everything and see what feels most pleasant. Some things, like watercolor, you might wanna look up a tutorial first to learn the technique. But if you got a pencil and paper, you're good to go. A pen is even better. Can't erase stuff. It forces you to draw with minimum mistakes. If you develop the skill, the tool barely matters. It may affect the look of your drawing, but it won't make you improve any faster (unlike what most people think), trust me. Don't buy the expensive stuff, unless it's the only way to achieve a certain effect.