You'll probably have better results on the housing-stuff if you posted within the Living In Japan subsection.
http://www.japanforum.com/forum/living-japan/
There are places, referred to as gaijin-houses, that you can rent a room on a month-by-month basis. They are set up for foreigners, usually meant only as a temporary stay. Its not recommended for a long-term stay though, for your own sanity. No personal experience myself, but I've heard the housing is usually shared with upwards of 12 other people, and the staff tend to be a bit on the abrupt side (understandably so, since they have had foreigners ditch out on rent in the middle of the night)
I've never even heard of people studying via YouTube. Do you also study the writing system that way? It would seem rather difficult unless it was a very professional video.