'Even in this refuge there are threats that we must confront. You will need to know how to defend yourself and push back these threats.
If you wish to survive, you must learn skills from others, like myself. We can guide you through your training and help you to become stronger.
'Learn the skill Ceaseless Argument from me and show me that my teaching has given you mastery by striking the training-dummy nearby.'
Your trainer wants you to use your new skills to prove that you are ready to face the many dangers that exist in the world.
NOTE: Use the trainer and select Train Rune-keeper Skills to open the skill selection panel. Left-click on the skill to highlight it and then left-click the Train button at the bottom of the selection panel -- or double-click the skill -- and you will successfully purchase the skill.
Now that you have successfully used your newly learned skill return to your trainer and tell him of your success.