+Neaman Lerhmari thank you! i basically just printed out big-sized letters and drew them into the sketchbook. this way you really get a feeling for the characteristics and differences cause you have to be very aware of them while drawing. i really recommend trying it!
+Semitotal i'd love to, but it was a project for design school and unfortunately i never got it back after handing it in. there's tons of great websites discussing the differences between these typefaces, though!