Changing secondary class to warrior? where is it?

Hi, I cant seem to find where I can change my secondary class to warrior... Ive searched the forums with the search button to no avail.

Thanks in advance for your responses :P

You have to ascend in the desert first, then do warrior's path, and you can get that quest in either seeker's passage, destiny's gorge, or hero's audience.

Also, I think you might have to do Vanyi's quest Hero's Journey, but I'm not sure.