This is why shooting IDPA is so much fun. They come up with some great scenarios. If you can say, "hey, it could happen", someone has probably designed a stage around it.
If you've only ever shot from a stationary position on a range, you're likely not ready for a self defense situation in real life. You've probably got an IDPA group near you that shoots regularly. Every one that I have interacted with was very supportive of newbies, so don't let that stop you from checking them out. You use your everyday carry gear, so not expensive to get started.