Lineage 2 Adena is the name for the currency used in Lineage 2. It comes from monsters, NPC's, quests, vendors and other players.
The best way to make plenty of Adena is to sell items to players. There are certain items like weapons that players need and are willing to buy from other people because of the high prices in stores. Another way is to farm items from quests or monsters and sell these at vendors. This may be a tedious process, but over time your L2 Adena can add up greatly. Clans may also earn Adena by taxing the surrounding lands if they own a Castle in the area.
Here I will give you some tips on farming for new players.
1. Do map quest right away, the map is the most valuable quest (not Lineage 2 money wise) you will always be lost without it, even if you are pro.
2. Always get weapon first! Never armor, Weapon first, armor last.
3. Keep a few healing potions, they can be the reason you usually live when running, unless you do not mind losing valuable Lineage II gold and exp.
4. Chat commands: ! shout, "(name) whisper, @ clan chat, # party chat, There is also regular chat, that is nothing.
5. Never and I mean Never, Hit someone unless you fully understand the consequences even if they hit you, even if red, its best you run until higher level.
6. Before you attack any monsters, you should know whether you have enough blood, skills and experience. It is not an easy process to make Lineage 2 gold. If you are not careful, you will lose lots of money and experience.
7. Be careful of the cheap Lineage 2 Adena cheats. There are a large number of scammers, who sell very cheap Adena.
I recommend you had better seek for those loyal sites and always buy Adena from them. If so, that will be safer than buy in the market of Lineage 2.