Talk to Gorsefur to teach your apprentice to hunt and Hawkfeather to figh, and walk around with your apprentice outside of Fireclan territory. You can talk to Breezestar to see your progress and once those are finished she will call a meeting for them to become a warrior a few days later :)
and if you chose starlingpaw as your apprentice then talk to uhh... i forgot her name.. shes near the medicine den? near the sandy bit? yeah, she'll help fight (: