Once you reach level 40, you can start claiming your free gear. All gear beginning with C grade and up to S grade will be obtained that way. To claim your gear follow the link below:
http://truly-free.lineage2.com/path
Login on that page with your game account, pick your server and charachter and scroll down. You will see items that are available to you. Click claim button.
Next step is to login the game and go to any Dimentional Merchant NPC in any town. DM is usually near the warehouse in every town.
Note: when you claim your C grade gear you will also recieve mentee certificate. This item is very important, you must carry it in your inventory in order for you to get your mentor.
Once you reach level 76 you can claim your S grade gear. It is very important that you hold on to the polearm that comes in that package even if you don't have any pole skills. SO DO NOT DESTROY THE S GRADE POLE!