ac23:
gosh… where to begin… almost everyone I know who is now working toward more liturgically appropriate music was just where you are now at some point… OCP has had a strangle-hold (imo) over the parish music for such a long time, most people have a similar history. That is not to say that OCP’s competition in general is much better (I’m not wild about GIA either, although I think their product is way better than OCP in terms of material quality, accompaniments, etc.). If I had to choose a hymnal in modern notation to use at this point in my life, I’d probably ask for the Adoremus Hymnal…
For me, it was a sort of process of getting really just basically tired of the Pan de Vida, I am the Bread of Life, All are Welcome, etc., etc., stuff. I sort of hoped there was something better out there, but had no idea what it might be… I sang in choirs and as a cantor in many different locations around the country (my husband has a job that causes us to move a lot). Some places had contemporary choirs (one place had live mariachi music every weekend!) … I also played the piano… I loved to play many of those praise-music pieces because the piano accompaniments were fun to play. But, over time, I came to think it just wasn’t doing it correctly for the Holy Mass.
I had heard the Chant CD that came out 14 years ago or so… liked it, but initially found it a bit boring (hard to believe my attitude then).
Then, I began singing with a medieval music group that performed various types of early music with authentically medieval instruments… some sacred music, but also dances, etc. in various languages… early French, Portuguese, Latin, etc. In singing with them, I got just a taste of actually singing Gregorian chant and a whole new world opened up for me.
I found the group Church Music Association of America (CMAA) online when searching for Gregorian chant resources. I joined, became one of the founding members of our local schola… I have learned an amazing amount of things from the other members in a short period of time and my conversion to (what I now consider to be) true Sacred Music is well underway.
I guess I would suggest checking out the musicasacra (dot) com website first… there is a wonderful archive of the magazine they publish available… there is a wealth of information going back many years… and the great thing is… all the information about chant and sacred polyphony is all still relevant now… there is also a great list of relevant church documents, instructional books free to download about reading the notation and a list of member parishes so you may be able to find a group where you live…
There is also a forum there… great chance to read what others working in the field think and are talking about… in your own local area, I would be tempted to try and find a church that does at least some chant (whether ordinaries or propers) at Mass… or, if unable to find any chant, then look for a parish where they do some good baroque stuff (and don’t go to the contemporary or Life Teen Mass

)… you’ll be at least at the higher quality end of church music. Then, at least you could get some feel for what the alternative is…
My last thought for you would be to tread lightly… not everyone (by a long shot) agrees with me… we have to be charitable toward those who don’t share the same tastes in music. Those working in the world of chant and polyphony are a very small (in some places nonexistent) minority. Just get the information for yourself and learn as much as you can… you’ll meet others with similar thoughts along the way…
I hope this may be helpful to you in some way… Janet.