How does my friend apply for job with you?

There is a 420 jobs website that is very informative, I have checked it out even though I am not looking.

I am not sure but, if i was trying to get a job there I would directly ask the owner how they do their hiring. Its not a normal industry so the hiring practices might be different than the usual method. Again this is my best guess and you will never know until you ask. Should you find out let us know :-)

I don't know. Try online