The thing its that I have to talk about it not i an hour or two, but probably whole course 20 hours or something (I dont know the details yet), and it will be lectures for Art School students (15 person). And they will not use printer during the lesson, until the school will decide to buy, so it will be only a theory, with examples on the pictures, etc. Its easy to explain the whole thing in one hour, but to plan it for more time... its getting difficult of course I can talk about safety stuff etc. but what else ? doeas anyone of you have done some lectures properly ?