Council of Trent issue about Latin language?

After the Council of Trent the Catholic Church re-established LATIN as the language to be used in worship, how is this so significant?

is there a website where i can learn Latin for free?

jw cause im a begineer at latin and i really wanna learn how to speak it even though it's a dead language, it's still the language of the Catholic Church, lol! kick ass!!!!!!!!!!