I just bought a suitcase, so the combination is 000 (I didn't touch the numbers) and I locked it by mistake. How do I open it?
First, these numeric locks are useless, see this video on how to Decode Luggage Locks. Second, your image is blurry but if I see it correctly that's a TSA 007 isn't it? Well, here's a video on how to pick TSA 007 locks.
Edit: How to unlock a briefcase lock and figure out combo another video on defeating the numlock.
Edit2: if you have a 3D printer, here are the TSA keys.