What can I expect when beginning my first sourdough?

I am considering starting a sourdough culture. I know that I can find recipes online and I’m good at Google, but I’m wondering if anyone here has personal experiences to share. How much room should I expect the dough to take up in my kitchen? How long can you leave it when going on vacation? How much do you have to baby it, or does it take care of itself? Did it ever escape its confines and start taking over the kitchen? Did one ever turn out badly for you, or do you have any funny stories? Tips or hints?

Thank you for your consideration. :)