Hi,
I have one of these locks and have had success picking it. It is a fairly easy lock, though if you are a beginner I would suggest working on a different lock. Let me explain.
This lock has 4 pins and one security pin - a spool. An interesting note is that if you open it and look down into the hole that the shackle comes out of, you will see a retaining screw that if removed you can remove the entire top part of the lock. This is so that you can "re-key" these locks quickly by switching which top you put on the bottom body.
The keyways on these locks are real small, which means single pin picking can be a bit more difficult. Raking is not really impeded from the security pin. The lock does react pretty bad to over tensioning though.
I notice you're new to this website, and I'm assuming you're also new to lockpicking. Try lightening up your tension and learn how to pick that spool pin (look around on the site.) It's a very sloppy lock though, so you will not learn much by learning to pick it. It looks cool though doesn't it.
