“If you are new to the Latin Mass, my recommendation to you is not to worry about how to participate. Put down the booklet all together. Watch and listen in the silence and let your prayer arise. Have no expectations. Let yourself be surprised. Let the Holy Spirit be your guide. Treat this time like a holy hour before the Blessed Sacrament. Realize that during this Holy Hour, something magnificent is happening: Jesus Christ, the High Priest, is offering the Holy Sacrifice.”
I want to suggest you read the whole post here.