Of course! Imagine most people on this forum have a solid understanding of Adwords and know how to optimize in their favor. Nobody is going to give you industry niche secrets though.... and every industry takes a different approach
You can get a good idea of your niche and keywords by using https://adwords.google.com/select/TrafficEstimatorSandbox
I'm afraid you are going to have to find this one out yourself. Just pick some niches and start digging. Even now with my experience, I test niches and sometimes think it will do really well and it doesn't. It takes lots of time and practice. Just make sure you keep your budget low while you learn! Matt