I've never crate trained a dog before, so I have a question. I have two books on how it's done, but it's never clear on what to do the first few nights. So when I bring home a puppyD) and am slowly introducing her to a crate, what do I do during her first nights? Do I put her in the crate during the night? Or should I place her in a room or fenced area inside? Thanks in advance.