Rortate Caeli reports the Holy See, PC Ecclesia Dei, has published a couple of DVDs demonstrating how to say low Mass in the Extraordinary Form. They can be seen on You Tube here. By now, by regular practice and watching others celebrate, I have become reasonably competant it doing that myself.
What I am not quite certain about and what other priests and bishops seem equally confused about is how to celebrate Mass according to the Ordinary Form.
No-one seems to know what should normative there, nor how to choose from the vast number of options. Someone said recently; from Brompton Oratory to the diocese of Linz we experience the variety of interpretations of the Roman Missal. Are all correct?