Disassembling a camera - dealing with a flash capacitor
If you have 0 V across it it will be safe. Mainly because you mention it hasn't been used for a year. If you would have discharged the capacitor through a resistor (or even short it out) the voltage will go pretty low, but may rise again if you remove the short circuit. But if you measure nothing after a year that effect is completely gone.  

Now the question is: what do you want to learn from it? I don't mean to discourage you, but cameras have few parts in them which are reusable for hobbyists. The sensor may be attractive, but it may be difficult to find information how to wire it up, like when it was custom made for Olympus. And I wouldn't recommend this for someone who's new at electronics.