Get the latest iPhone(or droid) possible if you can’t get a good dslr or camera period.
Get yourself some lights. You don’t have to spend that much.
Get a microphone. They sell this stuff at Walmart now. There’s no excuse.
You have a good personality
it seems like you freestyled the video which is fine, I’d suggest jotting down some notes so you can have something to reference while talking about stuff.
If possible get a second person.. a chick preferably just to have someone to banter with. I believe that could work better with what you’re doing.. You don’t have to though.
Add graphics and background music. Something to make the video less boring. I know you can’t play these videos but you should do something to cut around that.. speed the video up or something.
better background
Keep working at it man. You might have something here.