Most spice mixes seem to use a few basic ingredients
Corriander
Cumin
Paprika
Turmeric
Curry powder, usually rajah
If you keep these handy then he should be able to use them if needed for making the mix.
Also as you are paying for this lesson, dont be polite when a question springs to mind, ask it and if you dont understand the answer, then ask again until you do.
You are the boss, make him earn his wages.