Suggest a SAP Module

Dear Group,

I have a Masters degree in Environmental Engineering with a 2 years of experience in the same field.

Now I am planning to learn SAP for my career growth.

Environmental Health and Safety (EHS) Module in SAP is related to my field which I think I can learn easily than other modules.

I need suggestions weather learning SAP would be a good option for my career or not. If yes then which module would you suggest me.

I am planning to learn from a certified institute and give the certification exam.

thanks