Newbie here, as far as this forum goes.
My Paperwhite came about an hour ago. It's in addition to the Touch I've had for a year. I was able to load a dozen books from Calibre (0.9.1) without difficulty. However, some show up as Books and some as Docs before they are put in Collections. And it turns out that you can't "Create New Collection" until you've turned on Wi-Fi and registered.
Can someone explain exactly what the indexing is? Is it wise to load relatively few books at a time?