There does not seem to be anything set up well for a brand new person with the desire and talent to go to get started from scratch.
I'm not sure if this is of any importace, but the Graduale Simplex was first published in 1967, two years before the N.O. and Ordo Lectionum Missae were promulgated (the introduction of De oratione communi seu fidelium (1966) even refers to a 1966 edition of the Graduale Simplex - does anyone know about this edition?). In 1975 a revised edition was published to reflect the changes in the new Missale Romanum, Ordo Lectionum Missae and Ordo Cantus Missae. However, for some reason the initial choice of the psalms for the responsorial psalms remained unchanged.
1. You will want to download "Psallite Sapienter" in PDF format from here.
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