Now that the Roman Rite of Mass has two forms side by side it is important, I think, not only that these forms be celebrated but that they be studied.
A classic text which should be central to this is Jungman's The Mass of the Roman Rite. This great book, perhaps more than any other like it, speaks about how the classical liturgy developed and the significance of its elements.
Other necessary texts are Sacramentum Caritatis the recent Apostolic Letter of Benedict XVI which is a magnificent and over-arching presentation of the Liturgy to date, and which seeks to direct organic liturgical development.
Redemptionis Sacramentum is also a necessary document as it defines the reformed Rite of Paul VI, distinguishing clearly its genuine elements from false appropriations.
There are two other essential documents for today's study of the Liturgy: the Council's text Sacrosanctum Concilium which tells us how the Church wishes to embrace the Litugical Movement, and Pius XII's Mediator Dei which originally gave focus to the Liturgical Movement.
These are the texts we should be looking at and discussing today as we endeavour to enter into the Liturgy of the Church in this age. When you've got through this lot, get in touch and I'll give you another reading list!