Hello~~

I have a small question... I have recently bought myself a new laptop with touch screen and all that and there's a little pen with it and now I really want to draw on my PC/tablet thing because that would just be awesome, but I don't know which program to use... so my question is, does anyone know a program I can use to draw on my new thingie with? And I thought of trying photoshop but I don't really want to spend a lot of money on it because I have better uses for that ><

So I would be really grateful if any of you could tell me something I can use. c: