You need to talk to the Black Spirit, go in the Guide section and then click on [Knowledge] Obtain Drying: Beginner. And then, all of the green quests will appear like the one at Techthon in Heidel (Need for Soft Hide!). Took me a while to figure it out.

Just a note. Drying 5 of the Lizard Hide gives you Hard Hide, Drying 10 of the Hard Hide gives you the Fine Hard Hide