Guild Wars 2

For some reason I thought mastery training in a category was account wide..but I guess not.

Anyway, can I be training for different things on different toos? For example, on my ranger can I be part way though Itzel language, then switch to my guardian and train him in the glider line? Will I lose me progress on Itzel language with my ranger? Do I have to keep resetting them back and forth?

Mastery should be account wide, and if I am not mistaken, switching to a new line should still keep the old exp in the other.

I can answer one question for sure, if you are in the middle of one mastery and switch to another before it is completed, your progress is saved.

I’m not sure if the mastery you select to train is account bound, but I believe it is. E.g. if training Itzel lore on your ranger, I believe when you swap to your guardian you will also need to change to glider mastery, then change back when you go to your ranger

its account wide so even if your guardian is training gliding mastery the exp you got on your ranger will stay in itzel lore