"Doctor Who: Essential Guide" by Justin Richards is another book published on the occasion of the fiftieth anniversary since this world-famous series started broadcasting, a book that many fans of the series would be happy to find this year under the Christmas tree.
The author puts more emphasis on the graphical representations and illustrations, not so much on the text, so don't expect an encyclopedia type of book.
The book is around 200 pages that makes it quite fast to read/view, though it provides a great retrospective of Dr. Who series through all generations and actors who participated in its rich history.
Also, it is evident that the author intended this book to already hardened Dr. Who fans because he didn't try to give a lot of background of the series, only making the excellent retrospective of what viewers could watch for the last 50 years
The only error, though it's only a minor one, I found is incorrect name of "The Dream Lord" who was called instead "The Dream Master", though I believe that hardcore fans will forgive to author that mistake.
Therefore Richards's "Essential Guide" is an interesting and certainly desired by many fans book full of nice pictures which despite its shortness gives a nice summary of the history including all eleven incarnations of the Doctor.
For this reason, if by chance your kid or seasoned fan who loves Doctor Who hasn't heard about the book release, I suggest you consider this book as a gift for Christmas, you will surely cheer her/him up.