1) The first method is a way to use a standard YouTube account "Youtuber" in order to get longer than 10 minute videos on youtube. This is a custom embed script that stitches one video right up against the other in order to make it look like a longer video.
The following is out of date, but so cute, I had to put it up.
2) A very fun way to switch to a "director" account in order to upload longer videos. I'm not sure what other requirements are needed to obtain a director's account. There may be a minumum number of views, or followers. Someone please fill me in.
3) WAIT!!!! Apparently you can't get a director account any more. You have to sign up for some kind of Partnership account now. It looks to me like the RIAA has insisted that YouTube have enough information on people so they may be tracked down and sued if they violate some copyright.
Apparently you need 100,000 views of your videos or 300 subscribers. That is not as easy as it sounds. You have to be popular enough that YouTube can afford to keep an eye on you so you do not violate copyright laws. I cannot find a page that says "You need A, B, and C to become a partner." That would be very handy YouTube.
There is an exemption for non profits. YouTube comes right out and says you have to have a good sob story or they won't bother. That is good to know.