Went with Iphone a couple of years back after being android user for my phone. My wife got me a Dell Venue tablet for my birthday. I know it's not the best, but all I am going to do is read on it. I have some books on PDF. Is there an app I could use that would "remember" the last page I was on in these books and then when I bring the book back up later it would keep me on the same page I finished on? Or will I just have to go through the pages manually and keep a mental bookmark?