http://wiki.project1999.com/Players:Adventure
See the guides there, but I'd recommend just leveling up and then farming plat dropping mobs/sellable weapons (like bronze weapons off sisters etc.), as most items on red sell for a lot less than on blue (exception being certain PVP friendly items).
Maybe if you're looking to farm a rare item, the MR earring from Eruds Xing (level 15 mob drops) - I'd guess you'd be able to sell it for a ton on red.