This is pretty good for a freebie. It covers the basic background for the series Call the Midwife - up to the end of Season (series) 3. There is a bit about the East End, and this is the weakest section because it seems little more than a list of facts gleaned from Wikipedia. There are even strange formatting issues. The bit about the characters and actors is better, though I am not sure why the author keeps using first names for the actors. It does seem as if the author did read the books.
So it's good for the freebie pile, but I am not sure I would want to pay for it.