Apollo 4 to 8 involved testing and making sure the Saturn rockets could get to the moon and orbit it.
Apollo 8 was the first manned flight to the moon but it only orbited the moon and then flew back to earth.
Apollo 11 was the first landing on the moon.
On July 1969, Neil Armstrong and Buzz Aldrin landed the Lunar Module on the surface of the moon in the Sea of Tranquility. They walked around on the moon's surface for 2.5 hours and brought back 47 lbs of moon rock. This moon rock was then handed out to the 200 nations of the world as a gesture of friendship.
The last Apollo mission was Apollo 17 on December 7, 1972. The program was cancelled due to costs.
In all, the program brought back 841 lbs of moon rock, a type of rock that cannot be found on Earth.
Lunar Module - the part above the gold foil section blasted the astronauts back into space for the journey home
Many people have suggested a conspiracy where the whole thing was televised and mocked up in a studio. However, there are many factors that prove they went there:
Image of Apollo 11 landing site from Japan's SELENE probe (2008)
Buzz Aldrin on the moon
Photo taken by Neil Armstrong
Neil Armstrong (1930 - 2012) - first man on the moon