There is a peculiar form of insanity that afflicts many a Whovian at some point in his or her life. Though the American Psychiatric Association has not yet included this disorder in the DSM, in fandom, it is known as "Wouldn't it be fun to watch every episode of Doctor Who in order from the beginning?" If you are suffering from this affliction, you would be hard-pressed to find better companions for your long day's journey into night than Messrs. Wood and Miles. Of the three guidebooks I've been using as navigational aids for the Hartnell era, "About Time" is, by far, the most comprehensive.
Their analysis of each story is divided into four main sections: 1) a general overview of the story, with headings such as "Which One is This?", "Firsts and Lasts", and "Things to Notice", 2) "Continuity", in which they point out how aspects of the story fit into the admittedly contradictory Doctor Who mythos, 3) "Analysis", in which they discuss various cultural and historical trends which influenced the creation of the story, point out the plotholes and inconsistencies, and provide their judgment of how good or bad the story is, and 4) "The Facts" including info on the writer and director, the rating figures, the number of episodes that are missing from the BBC archives, and various other interesting off-screen details.
Though I don't always agree with their conclusions, the day that a given pair of fans will agree on every point that can possibly be made about the object of their shared obsession is as likely to arrive as the day that my cat agrees that it is more important that I get a sufficient amount of sleep than that she gets her breakfast precisely when she wants it.