The folks at Godswar Online have posted a guide to the game's Master and Apprentice System.

The Master and Apprentice System has been newly designed with the purpose of enhancing the interaction between Veterans and Newbies. With the help of this system, Newbies can become used to the game more quickly, whilst the veterans can gain rewards through teaching.

Learn from a Master

First, we'd like to tell you how to get a master. Please pay attention.
1. Who can become an apprentice?
a.Characters should be below level 49 and their level must be at least 30 lower than their chosen master's.
b.Characters do not already have a master.
c.Characters haven't ended a master and apprentice relationship within the last 24 hours.

2. Procedure:
After meeting the previous requirements, you may follow the steps to getting a master.
a.Team up with the master that you want to learn from.
b.Together you should go to find the "Revered Teacher" in the main city and then the master should talk to the NPC.
c.A dialogue box will appear, click "Okay".
d.The system will inform you if you have successfully gained a master!

Read more here.