Obligatory car analogy
Here is a car analogy that is reasonably true.
Scene - The Midlands Car Show Room.
Customer: My friend says that I should buy a car - I want to visit my sister in Brighton.
Salesperson: We have really good cars here. Brighton is a long way, so you will need a comfortable car with a big engine - Like our WinCar. Do you have a family?
C: Yes - I have a partner and 2 children.
S: Oh, our WinCar SuperPlus is ideal for you, it has special shiney stuff to keep the children entertained.
C: Is that it? It looks complicated.
S: No, not really, everyone with children should have one of these. It is very shiney, and will be really comfortable for you all when you go to Brighton.
C: I have not driven before - Is that all right?
S: Yes, it is very easy - everyone else does it. I can teach you the basics here. This button here starts WinCar. See the lever on the floor - push that to "D" when you want to go forwards - If you want to go backwards you push it to "R". Now when you want to go around a corner turn the steering wheel. There are a couple of other things that would be useful - You can make the wipers go if it is raining - All of this stuff is in the really simple manual.
C: Are you sure? It still looks a bit complicated...
S: Oh everyone can do this - You did say you have a friend who knows about cars? They will help you.
C: Yes, but he is a bit busy - He works with cars, and can't always find the time to help.
S: Oh, you will need this book then "WinCar SuperPlus for Prats", it is very good, and will soon see you right.
C: OK - I'll take one.
S: Thank you (trousering customer's dosh), You will really like it.
S: (Sits Customer in WinCar). Oh by the way, when you leave the salesroom, remember to drive on the left...
Tim (The Car Expert) - Hat, Coat, Exit, pursued by a lemming.