If it is your first character then good way to get some adena is to always pick up all drops from monsters. After exp you can go to Giran Harbor and check if someone buys the materials you got. If not you can always sell to NPC in towns.
Solo exping is slow and expensive if you do not have buffs, you can try to find a buffer that would like to exp with you, but it can be hard as most of people prefer to exp on RBs.