No dumb questions!
Grab a barbell with hands about 4 inches apart. Wrap thumbs around the same side of bar as other fingers. Make sure you grab bar evenly, or it will tip during the exercise. Sit toward the end of a flat bench and place wrists down just slightly off end of bench. Start by letting wrists bend down, stretching your forearms, and then slowly squeeze/curl your hands toward your forearms. Don't try to go too heavy and shoot for 12-15 reps before major burning sets in!