Your Alt characters can skip the introduction quest for professions to instantly unlock Profession Knowledge by talking to an NPC in The Walking Shore!
Beware: If you completed any Quest in that storyline, the skip option will be removed.
If you’ve completed the introduction quest chain Catching Up! on a character to unlock Dragon Shard of Knowledge and the vendor Khadin, your alts can use a skip so you don’t need to do it multiple times. The quest chain is:
On your alt, head to The Waking Shore and talk to Haephesta who will give you an NPC to skip all the above quests.