Training field technicians at trade school level
“The moment you doubt whether you can fly, you cease for ever to be able to do it."
Am I correct that normally I can only put into play event, attachment or ally cards by spending resources from a here of the same sphere but then attachments can be place on hero's or allys from any sphere?
Apart from all the typos you are correct, yes.
When I complete a Guest do I discard all locations, and enemies in the staging area and move to the next part of the Quest? Such as moving from 1B to 2A card?
No, normally you don't discard anything from the staging area upon moving to the next quest stage.