Now at level 2 Darkfire it does a lot more damage, around 1k (1k = 1,000 so 10k = 10,000 which is mostly used in money terms on Metin2).

Having a level 2 skill will definatly help you in leveling.

Now at level 23 you can start training in Maadi on Black Wind and Black Tornado monsters. When you reach level 25 you can go to SujinDen and kill monkeys to get a horse medal, which you can give to Stable Boy to get a horse (you can also buy the horse medal from players).
You will have to kill 30 Savage Archers in 30 minutes to get a horse, then you talk to Stable Boy, wait 1 day and then you can give him 100k to get a Horse Sword which if you right-click it summons your horse, you only have a 15% chance to summon it, you can make this a bigger chance by reading Horse Summoning books.
Once you reach level 28 go to Northern Maadi and train there on Savage Minions & Infantry's because it gives good exp at that level.

All the skill points you get leveling from the point that you get Darkfire level 2 on metin2 yang go to Shadow Bolt as it is a really good skill when Mastered.
At level 35 you can start asking for BO Parties in shout (shout by typing ! and then your text so for example !Are there any BO parties?*)
*Shout only can be done once every 15 seconds

BO Parties will level you up and when you reach level 39-42 it is time for your second Master skill, Shadow Bolt (this is my advice, you aren't forced to chose these skills!).
Now at level 40 you can go get a language ring and do the next Ancient Page quests.

PvP or PvM (PvP = Players vs. Players, PvM = Players vs. Monsters)

Now it is time to chose what direction you will go, the PvP or PvM direction.
When you chose the PvP direction you should start putting skill points in Ritual of Doom.
When you chose the PvM direction you should start putting skill points in Aphotic Shield.
You can also go both ways by putting skill points in Ritual of Doom and then when it is mastered, start putting in Aphotic Shield (or the other way around).

Now you go and level up, after Ritual/Aphotic/Both I would advice Entangle as it can slow your target and last but not least Bloodrage.