Philosophy - What (if any) topic should I study next?

[MathHelp]

Hi there,

I have studied logic and found it offers significant practical benefit to me in everyday life. I wondered if other philosophical topics might offer me practical benefits as well. So I started learning about Metaethics. After studying various theories and with no apparent end in sight (and no obvious practical benefit), I thought I might try a different subject so I started reading about epistemology. However, once again it seemed that it was just various theories with no practical benefit to it. At this point it seems to me that the main benefit of studying both metaethics and epistomology would be to 1. Contribute towards our growing knowledge so that we may one day figure out something practical for society and 2. Be able to regurgitate theories in an exam and 3. engage in debates. I don't see anything wrong with this, but it is not what I personally want to use philosophy for.

So, if I were to keep studying metaethics or epistomology would I eventually learn things that have practical value? Is there another subject within philosophy that is highly practical like logic?  

Another question I had was, is there an order in which philosophy should be studied? I noticed a lot of introductory textbooks (other than logic books which are really good) use all kinds of specialised terms without defining them which makes me think both epistomology and metaethics are for courses that take place after a student has already completed a pre-requisite course.