there's no way for me to get to the table of contents in the PHB.  I open the book and it takes me to the Paladin class (the last thing I looked at) when i hit the back button it goes back to the main page. if i want to go somewhere else in the book i have to search.  there should be a link to contents available 

Touch on any point of the page. A scroll-menu appears and there is a button to go to the ToC.

thanks. that kind of hidden functionality is not good UI design, though. you might want to consider a change.