Hand balancer Yuri Marmerstein, who is to soon publish a book on handstands, just released a video where he shows some of his progressions to learn to do a one arm handstand. If you feel ready to learn it (you need to be able to hold a very still handstand for a good two minutes, have your pike press to handstand starting with feet on the floor, have a decent form and be very comfortable on your hands, per example - more details to come in the 2nd edition of my book, to be published in English in the near future), or if you're interested in knowing more about learning it, I suggest you take a look at Yuri's video:
His progressions aren't all the same as mine, but we definitely share a few.