WOW!! Great information. Now, dumb this down for us "beginners" lol.
OP, not trying to hyjack your thread, and tell me if this isn't the place for this discussion and I'll start a new thread...or direct me to an old one 
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"The givens"... the right room, placement, technique, etc.,
So, here's MY question...I want to record a few songs with video to post on Youtube. I have an Iphone, I have a Mac....that's it.
I can spend MAX $1000 and preferably less. Doesn't need to sound like it came out of Nashville, but needs to capture the acoustic quality of my guitars. What should I buy that will allow me to record music via video, get the best possible acoustic sound, and post it easily to Youtube?
So, what I need to know is recommendations on Mic, interface, camera, etc. Any help out there?