Cat Peeing places they shouldn't?

I looked over one day and notice that my cat was by the restroom door and started to pee there. I told her no and she stopped, sniffed and walked away. I cleaned up the spot with a carpet cleaner. To cut a long story short, I did a search and found a nice ebook that helped me out. The ebook is Complete Cat Training. I found Complete Cat Training to be a great book to learn about cat care and cat training. My cat isn't peeing by the restroom door any more. That's a great thing for me. Good luck on you cat care and training.