Hi Young,
I agree with Nararajan but I would like to add that it is also possible to choose a module that does not directly fit with your education as long as you like it and there is a demand in the industry. I will add some example here e.g. lets say you did a Hotel Management diploma and you want to come to SAP, there is no direct skill transfer to core SAP modules from this diploma. In that case, you can look for certain other factors:
1. What is the industry need?
2. What do you like to work more?
3. Are you more technical person or you are more business oriented person?
4. Do you like communicating with others?
Based on above question answers, you can decide a module. If you want more discussion on it, please write to me and I can reply you.
Praveen