Keep at it and practice practice practice!
It can get discouraging, but try checking out some of the videos here
. They are simple, but do a great job explaining. I'd leave that 5200 on the desk for a bit until you can start opening other locks. I don't have one but I hear they can be a challenge. This is a hobby that takes time to learn and is a challenge, but that's the joy of it when successful.
Keep up the good work.