Re: Where do I start?
if it's on in your area, there's no reason not to start with the Christmas special that's about to go out: all you really need to know is that something's gone badly wrong for the Doctor, and he's decided to give it all up and let the universe get by without him. Anything else will be explained in context...
"Some days are better than others. They say that where I come from."
"Loudly, I imagine, on the day you left."
(Blake's 7 - Rumours of Death)