From what I understand in order to level past 60 in a profession you need to fullfill crafting orders. Only problem is when I go into the orders tab, there are always 0 available. How is this efficient?
You don’t need to, though it does reduce your own cost of doing so.
For the weekly work order stuff, you can simply private work order stuff from alts, no big deal. Since crafting professions often get a quest to make 2-3 of their profession thing, you can put in a work order from alts for those things, then send them back to your crafter to complete that other weekly quest so you don’t lose or waste anything.
Disregarding how to metagame the system to complete dailies. Conceptually id say orders are a failure as nobody uses them for anything other than bop equipment.