Don't worry. At his age he should be able to show what he can come up with editing wise and vloging with the software included on is computer. If he is doing game walk-through then he must have some sort of audio and video editor (even if it is iMovie or the windows equivalent) so before you throw a ton of money at this hobby do what you are doing. Affordable options and then have him stick it out and show that it is more than just a fad. There are a lot of how tos for editing and stuff that he can look up online that utilize free programing. Also he is a student so best to look into student editions for now as they are free or significantly cheaper.