And those of the Ave:

Ave Maria gratia plena Dominus tecum.
Hail Mary, grace filled, (the) Lord (is) (with) thee.
Benedicta tu in mulieribus
Blessed (are) you among women
et benedictus fructus ventris tui, Jesu.
and blessed (the) fruit (of the) womb (of) you, Jesus.
Sancta Maria, mater Del, ora pro nobis peccatoribus,
Holy Mary, mother (of) God, pray for us sinners
nunc et in hora mortis nostrae.
now and in (the) hour of (the) death (of) us.
Amen

If you’re learning to say it aloud, don’t worry too much about pronunciation - I’m sure most Medieval folk didn’t.
The main rules are to sound each separate letter and vowel clearly eg “dei” sounds like day-ee
Italian type of soft “c” for “coelo” (chay-lo) or “coelis” (chay-leece)
The “bus” at the end of words rhymes with puss
“Gratia” and “tentationem” are Italianised with a long ‘a’ in graht-sea-ah and a short ‘a’ in ten-tatt-sea-o-nem
Silent ‘h’ in “hora”, (ora)
‘ae’ as in “nostrae” sounds ay, the ‘s’ is always sibilant - nosstray
“nobis”, “nostris” etc have a long ‘i’ - no-beece, noss-treece (to rhyme with fleece)
You can pronounce ‘v’ as ‘v’ (rather than the ‘w’ of classical Latin)

When you have said the words of these prayers umpteen hundred times, you will no longer need - or be able - to concentrate solely on the words themselves. At this point you focus your thoughts in a devotional exercise.
There were many methods but a fairly standard form of meditation which evolved gradually emerged thus:

While saying the first five decades you meditate on the
Joyful Mysteries:
1. The Annunciation
2. The Visitation (when Mary went to see
Elizabeth, mother of John the Baptist)
3. The Birth of our Saviour Jesus Christ in Bethlehem
4. The Presentation of the Boy Jesus in the Temple
5. The Finding of the Boy Jesus in the Temple (after he ran back to Jerusalem leaving his parents sick with worry on their journey home)

For the second five decades you meditate on the
Sorrowful Mysteries:
1. The Prayer and Agony of Jesus in the garden of Gethsemane (every time Jesus went back to his friends they were all asleep)
2. The Scourging of Jesus at the pillar
3. The Crowning of Jesus with thorns
4. Jesus carrying his Cross
5. The Crucifixion and Death of Jesus

For the third five decades you meditate on the
Glorious Mysteries:
1. The Resurrection
2. The Ascension of Jesus into Heaven
3. The Descent of the Holy Spirit on the Apostles
4. The assumption of the Blessed Virgin Mary into Heaven (not written up in the Bible but declared by one of the popes)
5. The Coronation of the Blessed Virgin Mary in Heaven

You can now now appreciate how, by saying the Rosary, you have meditated on all the most important events of the life of Christ.

There is no doubt that this recitation - whether you are Catholic or no - works as well as the Buddhist “Om mani padme hum” or any other such mantric device for resting the mind from its usual fretful scribble by focussing it on something requiring concentration of a spiritual nature.