Adam represents two things.
He was the first actual human in existence.
He was also the representative at that point of the entire human race.
Adam from Genesis
The main characters in Genesis are Adam and Eve.
Genesis
Adam did (Genesis 3:20).
Read Genesis.
You can find the complete account of Adam and Eve in Genesis 2:7 - Genesis 4:26, with extra details added in Genesis 5:1-5.
Yes. Cain and Abel were both Adam's sons (Genesis ch.4). Adam had other children as well, both sons and daughters (Genesis ch.5).
Adam. Genesis 4:25.
Adam and Eve
Book of Genesis
Eve didn't have a mother, she was created out of Adam's side (Genesis 2).
Enos is the grandson of both Adam and Eve. He is also called Enosh in the Hebrew Bible, in the Book of Genesis.