How can you easy get zeny in ragnarok online

There are several ways to get 'easy' zeny in RO. The most important thing to remember is to make a merchant. Merchants save 24% when buying from NPCs and get an extra 24% when selling to NPCs, so transfer all your items to your merchant character via storage and sell them on your merchant. This is the biggest factor in making money in RO. Some other 'easy' ways to make zeny are; hunting blue herbs and karvodailnirols (best monsters for getting karvos are poison spores and removers). Both sell for a lot and can be hunted by novices. You can also hunt for cards, certain cards can drop from easy monsters and are worth a lot; Soldier Skeleton Cards, Pupa Cards, Siroma Cards, Thara Frog Cards, Hydra Cards. If you want more tips, there is a thorough zeny-making guide here: http://guiderz.com/guides/ragnarok-online/get-rich-quick.html