Hi... newbie here. I'm working on a baby book and I have glossy color photos on facing pages in lots of places, so when I close the book the photos are pressed together (there's no page protector... the photos are just taped into the book). I'm wondering if I should put some sort of protector sheet or something in between the photos to protect them from sticking together when the book is closed?? And if so, what kind of protector should I use? Anybody have any ideas?

I would use acid free tissue paper. It's inexpensive and won't add too much bulk to your book. Also, be sure it's stored in a cool dry area.