Which nation did you start out in? If you statred in Bastok Fight and kill worms, goblins, qudavs, saplings and bees (Man Eating Hornets) save the beehive chips you get and once you get 12 sell the stack on ah for around 3,000 or 4,000. The Goblins and Quadavs drop gil and sometimes armor and scrolls that you can sell on AH, the saplings drop treant bulbs and grain or vegetable seeds that you can sell on AH, the worms drop flint stones and ores, the worms in North Gustaberg drop Zinc ore a lot which you can sell on AH for about 4-500 gil each. the Flint Stones also sell on AH. Very Important, before you go out to fight mobs talk to a gate guard and get signet. This way when you defeat mobs they will drop crystals, get stacks of crystals and sell those on AH as well.
In Windurst do the same as above execpt kill Crawlers for silk thread.
Sorry in Sand'oria i am not really familiar with it, do you best.
If you need more help send a tell to Canario in-game.
Canario Blu 90, Dnc 90, Drg 82,Rng 70,War 75,Thf 70
Nilsa, Alchemy: 93+3