It would be nice if the multi-profession trainers had a special quest marker (for example the blue quest marker) so they can be more easily spotted when questing on new characters or in new zones. Maybe even a quest a player gets at lvl 1 which directs them to the closest profession specialist.
Already implemented, you just need to interact with world around you + use interface options (small magnified glass near mini-map).
This is not straight mobile game that plays automaticaly, you'll even have to read quest description for some specific cases.