Let's dive right in then.
After reading my last expertly written post, you might be asking yourself, "Self? Doesn't the Doctor get lonely in all of time by himself?"
Well he does. And that's where the Companions come in.
Companions are more than just side-kicks. They are his Time-Buddies, if you will. A Companion and extra pair of eyes to keep the Doctor from blowing up planets when McDonald's forgets his fries. They also keep him grounded and in touch with the human side of his nature when the enormity of his role in the universe becomes too much.
Over the years, his companions have been family members, friends, mechanical (see K-9), alien, and even love interests. Some have been there for only an episode, while others have traveled from one doctor to the next. My mother has a theory that the relationship between your favorite companion and doctor may just mirror your own feelings about and relationship with him. But then she's weird.
The Doctor's mode of transportation in time and space is the Tardis, which stands for "Time And Relative Dimension In Space." The Tardis looks like a blue police box from Britain in the 1960s. She, because ships are always she, has a chameleon circuit that allows her to change her appearance, but alas, it is broken. Although the Tardis' appearance changes internally and incrementally externally from Time Lord to Time Lord, she remains the blue box we all love and know so well.
Another perk of being a Whovian--that's what DW fans are called BTW--is the spin offs! The Sarah Jane Adventures starred the late Elisabeth Sladen, a former companion, and Torchwood (fun fact: Torchwood is a anagram for Doctor Who) which stars John Barrowman as Captain Jack Harkness (#TeamIanto). While "The Sarah Jane Adventures" are targeted for a tween-teen audience, "Torchwood" is much more adult let's just say. How Adult? F-Bombs and naked Barrowman butt adult. Mom won't let me watch unsupervised adult. Just saying.
So now you've got enough basic Who knowledge to dive right in and binge watch several seasons or at least some episodes. Which episodes? Well, we'll talk about that soon enough.
Next stop on the "Everything You Need To Know About" train? Hide yo dead bodies, hide yo sanity: it's BBC SHERLOCK TIME.