Crafting is a rather straightforward venture, once you know the basic rules. It's a lot like common hobbies and jobs found in the world outside of Glasend. Take knitting, for example. This is an essential skill for tailors. Alchemy, herbalism, and blacksmithing is where things start to get tricky.
Fast crafting becomes an option, once the crafter grows in skill. So something that normally takes hours to make can be shortened to thirty, or even fifteen, minutes. Meike's seen this firsthand by watching Maggie. The only downside is that the results may not be as potent or well made as something that was constructed with care.
Please note that this is not a full list, but only some of the biggest professions.