Is there a user manual on Lumiread? Most of it looks intuitive, but I would think that after reading a ways in a book, it would return to that spot after leaving and coming back. The particular book I am reading always goes to chapter 15. I can go to the table of contents or scroll back to where I want to be, but why should I have to remember where I stopped at a given session. If anyone can point me in the right direction, I would really appreciate it.