Here are a few links that you may find helpful:
http://www.saintmonica.us/ – St. Monica Catholic Church
http://www.newliturgicalmovement.org/ – New Liturgical Movement – one of the best organizations providing reflection and study on topics related to the liturgy, beauty, history, etc.
http://musicasacra.com/ – Church Music Association – providing resources, as well as information about workshops around the country to assist others in offering traditional Sacred music for the liturgy (chant and polyphony) – they host a workshop every summer at Duquesne University, which I highly encourage
http://www.chantcafe.com/ – Church Music Association blog – conversations on all things related to Church music
https://www.ccwatershed.org/ – “Views from the Choir Loft” – reflections related to the Roman Liturgy and Sacred Music
https://instituteofcatholicculture.org/ – Institute of Catholic Culture – an adult education resource with a vast library of lectures on pretty much everything pertaining to the Catholic Church from both the Eastern and the Western perspectives. You will need to become a member by submitting your email address, but the extra step is worth it.