F1

"F1" stands for "Formula One" and it is a type of auto racing.

http://edition.cnn.com/2014/02/21/sport/sochi-formula-one-winter-olympics-ecclestone-tilke-f1/index.html?hpt=isp_t2

rags-to-riches

This is an expression meaning: a person who starts out poor, but becomes rich ...
or a story about such a person.

selfie

'selfie' is slang for a photo that you take of yourself, usually using a mirror.

3-D printer

"3-D" means "three-dimensional".
A "3-D" movie is a movie where you wear special glasses, and it looks like objects are coming out of the movie screen towards your face.
A "3-D" printer is a new invention that can make objects out of plastic, or metal, or other materials, even food:

http://www.youtube.com/watch?v=FVOVOe89TZ4

Olympics

I think that they should have an Olympics where no one mentions what country any athlete was born in. ...