The Canons Regular of Saint John Cantius have just launched an extremely pertintent and useful resource: Sancta Missa: Tutorial on the Tridentine Latin Mass according to the 1962 Missale Romanum.
It is a work in progress, but it already provides substantial amounts of information for priests wishing to learn to say the usus antiquior. It will also soon be giving instructions at serving at the altar, and much more. You must look at it.
It is also very well designed, which is important.
