The Annunciation

Benedicta tu in mulieribus et benedictus fructis ventris tui, Jesus. 

The Propers of the Mass in Daily Catholic

Dom Gueranguer and Juan Esteban Grosez about the Annunciation of Mary in Cristo Vuelve

John Gregory shares meditations on the Anunciación

The Glories of Mary by St. Alphonsus Ligouri in This link It is in Spanish. If you ingress the Twitter account Ed Young, you may find excerpts of this book in English, but i can´t publish the link because i can´t access Twitter. 

This prayer has indulgences:

Prayer for Conversions– Raccolta # 627

O Virgin Immaculate, thou who by a singular privilege of grace wast preserved from original sin, look in pity upon our separated brethren, who are nevertheless thy children, and call them back to the center of unity. Not a few of them, although separated from the Church, have kept a certain veneration for thee; and do thou, generous as thou art, reward them for it, by obtaining for them the grace of conversion. Thou wast conqueror of the infernal serpent from the first instant of thy existence; renew even now, for it is now more necessary than ever before, thine ancient triumphs; glorify thy divine Son, bring back to Him the sheep that have strayed from the one fold and place them once more under the guidance of the universal Shepherd who holds the place of thy Son on earth; let it be thy glory, O Virgin who destroyest all heresies, to restore unity and peace once more to all the Christian people.

• An indulgence of 500 days. 
• A plenary indulgence on the usual conditions, on the Feasts of the Immaculate Conception, the Nativity, the Annunciation, the Purification and the Assumption of the BVM, if this prayer is recited with devotion. 
• A plenary indulgence on the usual conditions, for the daily, devout recitation of this prayer throughout an entire month