>>4468655to draw on your laptop just get a marker and draw on it simple
as for digital drawing you can use a mouse, but if you value your wrist health get a drawing tablet, best brand is wacom but theres cheaper but with some risk of being faulty depends on your luck with the product, and regarding size anythings fine, but medium or large is better for ergonomic reasons especiall on a large one you can draw with your shoulder like on paper
