I have a graphic tablet that transfers the movements of a pen to the screen. There are various graphic programs (Photoshop being probably the best known of them) with which you can use the tablet pretty well. It's very different from traditional art but you get used to it after some while. And for me it's much easier to take with me when I'm not home, instead of carrying all my art stuff
Yes I've had my tablet for almost 3 years now. And the basic rules of drawing don't change. You still keep the basics of shading and shapes. So if you figure out how to do that with pencil and paper a tablet shouldn't be much trouble either
and
Thank you!