The word Advent is taken from the Latin word adventus, which means “coming.”
Advent gives us an opportunity to wait in joyful expectation for the coming of
Jesus, who is Emmanuel, God with us.

The Bible Project have put together a series of Advent Word Studies.
Check out their explanation of Hope here.

The Piano Guys offer a beautiful rendition of the Advent Hymn,
O come, O come, Emmanuel.