Since you're still under 51 , I would keep with quests , and as suggested above , find a guild for guild quests. And yes , orange equipment is the way to go. If you feel you cannot afford it , stick with blues with stats for that class *like mage would use m-crit , m-dmg , cast spd , int , lck , agi*. As I mentioned above , 51 is a level suggested to farming. Though , 45 is also a level. Farming is a great way to get good blues , money for oranges , and best of all , exp. This is why I love farming. But since you are only 26 , might be higher by now , but stick with main quests , reps , dungeons , and limiteds. I think you'd get like a 100g per couple of hours of this.
Orange equipment starts at 23. The levels for it are 23 , 33 , 35..? , iforgottherestuptill50 , 50 , 53 , 55 , 58 , 60 , 63 , 65 , 68 , 70. I haven't played the 75 cap yet so I wouldn't know. But the pattern of 3 is a hassle. You only have three levels to get enough money for the next set. *i'm getting off topic ffs..* Gold though , is a major key for ee.
I got ALL of my gold from AP. I would farm sometimes though. You can farm with mage , cleric , bard , knight , templar , blade dancer , engi , thief , and maybe sage? lol i don't even know. I say the easiest classes to farm with are mdps , engi , and knight. I think you can farm baltaroi. The dungeons you can farm are : Veninfang , Delphi Temple , Century , Manor , Strumfaru *icantspell..* , Skleros *you will hate this with your life and soul* and Rage Cape!. You can farm all of these dungeons with engi/knight/bard. M-dps for almost all. but gold is ee's center. besides a game.
blahblahblah hope this helps