ok I found a super easy way to put your youtube videos on
say this is your link
http://www.youtube.com/watch?v=uwIGZLjugKAall you need to do it type the following before [youtube]
then from your link put the last bit after= so that's uwIGZLjugKA
then type [/youtube]
so it should look like this [youtube]uwIGZLjugKA[/youtube]
now click on submit