As of yet, you do not earn them.
Look at the thread below to see which items are earned and what the do.
http://discourse.codecombat.com/t/when-do-i-get-which-item-a-reference/2212?u=j_f_b_m
As of yet, you do not earn them.
Look at the thread below to see which items are earned and what the do.
http://discourse.codecombat.com/t/when-do-i-get-which-item-a-reference/2212?u=j_f_b_m