Cant learn professions

Hi guys.

I'm new to Warmane so pardon me if this is a faq, but i cant learn professions (mining/herbalism...) Is this normal?

You should be able to learn professions if you meet requirements and are at the right trainer. More information would be required to find the problem.

I'm a lvl 17 Rogue Worgen, i go to trainers and try to learn a professions, when i click "learn profession" nothing happens.