A magician, whether professional or amateur, should never reveal how a trick is done, except to another professional or serious (motivated) student.
I have a library here of a couple hundred professional musicians' instruction books (some rare and valuable), and used to consult with some professional musicians on stagecraft, having done a bit of stage work. (Heck, I used to post more on a magic board than on AK!

) I know how those things are done, but sorry... I ain't tellin!
I'll tell you this: "It's magic!"
Seriously, it's better to be puzzled by these things than to have them explained, because, as fotno so aptly put it, "that sucks all the fun out of it"! It also makes it hard for magicians like the guy in the video, who have spend countless hours honing their skills, to continue performing and making a living. No one wants to see tricks that don't mystify them! It gets harder all the time to fool people, as more and more people learn how many tricks are done.
If you REALLY want to know the "secrets", start learning some tricks, any tricks, and start practicing. Work up a routine with some patter to show some earnest interest. You'll find that once you've put in some dues --it doesn't take much, really-- to demonstrate a genuine interest in learning magic and not just a passing curiosity to know how things work, plenty of magicians will welcome you into the community and help you out, just like the folks here on AK do with fellow enthusiasts. The only difference is that the magicians need to keep a little bit of an "entry hurdle" in place to weed out the idle curious, for obvious reasons.