what all are you trying to get done for your son? you could skype with him and aside from handing him things and him holding them he could essentially learn watching if he is a visual learner... as far as getting things going...
i would be more than happy to help make various suggestions but i need more info first, what would your son be starting out with? what all does he need to learn?
are you planning on trying to start him out on a reo? or something else?
MVP V2 with a Protank 2 would be a great beginner set up... some liquids in different levels of pg and vg, at or around 18, 12, and 24 mg... let him get an idea, something that doesnt need rebuilding... i mean depends on what you are looking to do...