Level 1-21
Easiest bit, do the level missions, and all the quests, this should put you to 22-23.
Hunt level 5-15 Metin2 yang, as these drop skill books.
21-30
for money - I suggest warriors hunt Metin2 gold in second town (Aswan, Corinth, Maadi), other classes hunt jak-to for piece of gem and sell for 250k+, or hunt savage archers or bestial for fumes (full moon sword) and sell them.
For experience - hunt white oath at the start of second town till 23, then move to black wind groups, when you are strong enough kill savage archers/minions/generals.
Complaint&Suggest