ok skisdog, i actually have 2 different styles that i use. for the color pictures, i do an outline with a 2H pencil, which has very hard lead in it which makes the lines very light, and then i do all the color with chalk pastels. i find that with the chalk pastel, rather than oil pastel, i can make many more colors and its much easier to blend. (most people i know hate chalk pastel). as for the black and white drawings, i use a mechanical pencil sometimes (espically if im drawing anime pictures like the vampire Hunter D one), and i use a 2H and a 2B pencil. and weather im doing pastel or pencil, i use a papermat Pink pearl eraser. it dosnt leave alot of scraps on the paper and it erases even really dark lines well. as for the paper, all of there were actually dont on just normal computer paper. as of right now, i dont have the money to but a real sketch book or drawing paper, so thats what i use. and he unicorn head was done on piece of black constructin paper. i have a low budget.
i really need to get a sketchbook, charcoal pencil, more pencils, i could do alot more if i had more colors to work with (with the different styles of lead) oh... and ironically, i failed my art one class in school, and i have to take it again to pass this year.