There are two possible ways you could be asking this question, and so I will give you two answers.
The Introduction (is it a level or not, if it is then the introduction is the first level)
First Steps (really this is the second level unless the introduction is considered a level)
In LittleBigPlanet, the first level you play from the group of levels called "The Gardens", is called "First Steps".
Sackboy
It's a little planet with a big imagination so lets call it LittleBigPlanet
I think you get the "Week 1 T-Shirt" from buying LittleBigPlanet on the PSP the first week it was out.
Adams first job was to name all the animals in the garden of Eden.
Sackboy is the star
Sackboy
Sackboy
The garden had no name. It was planted by God in Eden. Eden was the name of the land that was to the east of where God created the first man, Adam.
In the first LittleBigPlanet 2 trailer released, titled "LittleBigPlanet 2 Announcement Movie", the song used is called Sleepyhead by Passion Pit.
NO
They are unlocked when you first access the Moon.