St. Benedictís and Veritas present Latin I.
Reasons to learn Latin:
It helps immensely with English vocabulary.
It teaches discipline.
It is the language of the Latin Rite Church. Sacrosanctum Concilium, the Vatican II document on the litury, says:
The use of the Latin language with due respect to particular law, is to be retained in the Latin rites." No 36. (1).
"Nevertheless care must be taken to ensure that the faithful may also be able to say or sing together in Latin those parts of the Ordinary of the Mass which pertain to them." SC, No. 54.