iPhoto gives you plenty of control over the importing process. Do you want iPhoto to automatically split up the photos into numerous events? If so, what time interval do you want to use?
If you’re adding photos by dragging them from folders on your hard drive, where do you want iPhoto to store the photos?
If questions like these burn in your brain, your fire extinguisher has just arrived. Otherwise, feel free to skip on. You can always return here when the embers begin to glow.