Welcome to the forum!! Isn't this place a God-send?

Pure aspirin is caffeine free. Some other painkillers (like Motrin and I believe Excedrin) have caffeine in them, though. You can always just read the label to see about additives.

Some people can take aspirin and some can't (it can be rough on the stomach lining). Personally I prefer aspirin to other kinds of OTC painkillers, but it's an individual thing. And BTW, aspirin should never be given to children.