Doctor Who is about an alien time traveller who wanders the universe trying to stop evil in the universe. He has a particular fondness for Earth and its inhabitants. For a while in the classic series he was exiled on Earth by his own people, the Timelords. He travels around in a time craft called the TARDIS which can travel in both time and space. It is bigger on the inside than it looks on the outside. It is usually stuck in the shape of a police emergency telephone booth from the 1960s, from when he first visited Earth with his grand daughter. In the revived series, his home planet has been destroyed in a massive time war, and he has been left as the last member of his kind. The Doctor is like a cat with 12 lives. Before he dies he has the ability to regenerate into a new body keeping all the memories of his past selves. This way he can extend his life time.

I would suggest you start with the first season of the revived series, with the ninth doctor, Christopher Eccleston. This season was first shown after more than 15 years off the air. So it explains a fair bit so that a new generation of viewers can understand what is going in. Once you have seen all the new series stories, then go back if you want and catch up on the classic series. You don't need to see the classic series if you don't want to. But if you do, you will have a richer experience of the Doctor Who universe by doing so. You will also notice just how much attention has been paid to continuity from the classic series to the new series.

The various generations of the Doctor occur in the following order:

Classic Series:

First Doctor: season one - An Unearthly Child

Second Doctor: season four - The Tenth Planet

Third Doctor: season seven - Spearhead From Space

Fourth Doctor: season 11- Planet of the Spiders

Fifth Doctor: season 18 - Logopolis

Sixth Doctor: season 21 - The Caves of Androzani

Seventh Doctor: season 24 - Time and the Rani

Eighth Doctor: Special - Doctor Who: The Movie

Revived Series:

Ninth Doctor: season one - Rose

Tenth Doctor: season one - The Parting of the Ways

Eleventh Doctor: Special - The End of Time (follows season four)

Twelfth Doctor: Special - The Time of the Doctor (follows season seven)

The War Doctor: season seven - The Name of the Doctor

Doctor Who is a science fiction aldventure show, it starts with him as a old man travling with his granddaughter. When the first actor had to leave due to health issuse, to keep the show going they came up with the idea of regeneration, so when he wears out a body or is badly injured he changes, still the exact same person, different body and since he has a new brain different personalit, same memories and morals ect. the searie ran from 1963-1989, then there was a move and the continuation in 2005. I became a fan of the Docot in 1980. The new series I would say Eccleston is very good(though the writers have done alot of stupid stuff there), Tennant's era was awful, they mostly turn it into a teen soap opera and Matt Smith is fantastic, very Doctory, though still some soapish elements, very looking forward to the 12(Capaldi)hopeing it gets back even more to the series it was meant to be

Oh god don't start with season one. Start at the revived first season with Eccleston (the first episode of season one is called Rose). It aired in 2005, and the 1963 show is a bit idiotic.

Doctor Who is about a time traveling alien who picks up hot girls and takes them to different planets. It's pretty fantastic. The doctor is funny and noble, he has two hearts, and it's just amazing!

I'm not a fan of a lot of the older series so I'm going to just tell you the revived doctors:

Eccleston starts it off in season one

Tennant starts in season two (he's my favorite)

Smith starts in season five

Capaldi has yet to start

Everything after about season five is utter sh!t though so that sucks. The head writer, Steven Moffat, took over the show in 2010 and he is a really awful writer.

above answer

Also could someone give me the general summary of what Doctor Who is about?

One more question: Can anyone tell me which series each # doctor starts? It's a little confusing :P

Thanks :)