SAP is a very good option. It is part of the big ocean i.e. several big companies like Accenture, IBM, Capgemini, etc. employ SAP.SAP is very vast and you cannot learn it in one lifetime.
-One has to choose between Functional Domains (Sales & Distribution, Finance & Accounting, Materials Management, Warehouse Management, Production Planning,etc.), Technical Areas (ABAP programming Language, Business Intelligence,Exchange Infrastructure,etc.) and upcoming trends like Service Oriented Architecture, Master Data Management,etc.
-Once you select upon an area, then, you can look out for the nearest "Genovate Coaching Institution" which conducts SAP courses along with the corresponding Certification Exams.
-The SAP courses have to be concluded with a certification exam in the selected area.
-The cost of the entire SAP course along with the exam would be expensive (approx. 1.5 lacs).
-There are many other institutions which offer SAP courses, but they may not always be legitimate.
Thanks & Best Regards,