Troparion (Tone 4)
Thy Nativity, O Christ our God,
Has shown to the world the light of wisdom,
For by it those who worshiped the stars
were taught by a star to adore Thee,
The Sun of Righteousness,
And to know Thee, the Orient from on High,
O Lord, Glory to Thee!
Kontakion (Tone 3)
Today the Virgin gives birth to the Transcendent One,
And the earth offers a cave to the Unapproachable One!
Angels with shepherds glorify Him,
The Wise Men journey with a star!
Since for our sake the Eternal God was born
As a little child!
Hymn To The Theotokos (Birthgiver of God):
Magnify, O my soul, the most-pure Virgin Theotokos,
More honorable and more glorious than the heavenly hosts.
I behold a strange, most glorious mystery:
Heaven—the cave;
The cherubic throne—the Virgin;
The manger—the place where Christ lay—
The Uncontainable God, Whom we magnify in song!
For an excellent collection of resources, including patristic texts, suggested books, videos, icons, and more, go here.