Financially, I wouldn't suggest starting with a tandem jump.
I would start out by paying for your first Accelerated Freefall jump which is going to be cheaper than a tandem(for whatever fucking reason). If you like it I'd pay for the rest of the class in full.
After you get your Skydivers certification it's only like $30 a jump.
I'm going in a couple weeks, only paying $125 or something for an tandem dive. I could definitely see myself getting into it and taking lessons, but it's tough to find time and to get out to places where I can do it.
I've never personally done it, but my grandfather was in the vietnam war and he said he did it all the time. He told me you never get use to skydiving. ALWAYS EXPECT THE ADRENALINE RUSH. ;P