You can easily get some additional FFXI Gil in Fishing. That sounds attractive. FFXI Fishing is different from mining that requires a big loss of money. You can try Finshing in Windurst where your skills will be raised soon. Hence, Fishing sounds the most idea job in Final Fantasy XI. Then what you should do exactly?
To begin with, you should buy a Glass Fiber Fishing Rod 2.1k in Windurst first that will cost you about 3000 to 4000 FFXI Gil. If you are lucky enough, you may have the chance to get one of 1.8k from San d’Oria. Then you can start making money by fishing small fish that will get lots of bites and work. For the bait, you have 2 choices, if you want to take your chances and go for the big money earner immediately, buy as many Balls of Insect Paste as you can afford, and head to a nice freshwater fishing location.
Port San d’Oria is a good place to start. Plop down next to Gallijaux and Joulet for a while and fish for Moat Carps.
Windurst Woods is also a good place. You can head up to the bridge by the Dhamel farm and fishing from that bridge facing south.
Zehrun The other option is to buy a Sabiki Rig. These can catch you up to three fishes at a time, but they cost a little more than a ball of insect paste. If you go for this one, heading for a saltwater location is a good choice.
Port Windurst is a great place to go. By the Fishing guild you can catch up to three bastore sardines easily at level 0 or lvl 1 fishing skill with image enhancement from the little taru there. Try for Bastore Sardines.
You may find that you cannot catch or bite as you first do. That means your beginner’s luck is over. However, you still have two points to do: Use fisherman’s gloves, tunic, boots etc that is useful for your skill up to get fishing gear. Besides, fishing low level caps can help you raise skills, for example, cobalt jellyfish or crayfish.