i started w goldsmith. i figured that everyone needed jewelry so it was a no-brainer. unfortunately, i think others thought the same and saturated the market. then i went to weaver and made tons, especially off of gear for crafters/gatherers.. but then i ran into the diremite and fleece wall. i would like to say to just look at the MB but it seems everyday prices keep falling and i fear the longer this game is out the less profit you will make from crafting. oddly enough, i always make decent money off of buying gear from NPC's in random locations that people forget about and selling them on the market. in this way, you save from farming/buying mats and more importantly you can completely ignore the shard fiasco caused by bots. another trick is to sell materia. find the ones that sell well, equip the appropriate gear, ask FC to use the +5% bonding buff and spiritbond while grinding WP/AK/etc.