Ah the Tubes are filled with new content every day. Most folks never get past the uploading screen but there is good reason to dive in deeper. For that you will need to make a side trip to the Google/YouTube Support Page.
For example, do you know how to add captions to a YouTube video? For some of you that have less than perfect audio I think it is a good idea.
Well, no it would be a better idea to have good audio and still have captions. Either way YouTube has made it easier to place captions on a video. Note, I said easier and not necessarily easy.
YouTube has a glossary of terms you might need to understand in order to get up to speed on certain instructions or YouTube specific features.
You can find out what video file formats are acceptable for YouTube upload so that you don't waste time and effort on trying to upload a non-supported file format.
If you are a newbie or you didn't know about the Help and Support Center you should check it out.