Mechanical Engineering

Yes, since you have done mechanical engineering and also have work experience. You can pursue MBA in operations management. As per me, start preparing for CAT 2017 from now on and try to score good percentile and get admission in the top institutions. Also, two years of work experience is considered ideal for pursuing MBA.

You should first complete your graduation and then apply for MBA.

Indian Railways is organised in different zones. You are advised to contact GM/ Chief Mechanical Engineer of zone in which you want to work so that if allowed by rules they can put into a repair or production workshop or factory in their zone. You can also contact DG RDSO to work in R&D department of Indian Railways.

Basic salary package depends on the company. The maximum package that went this time was around Rs 6.7 lakhs. On an average the package is around Rs 4 lakhs and there are a lot of job opportunities. Companies like Maruti suzuki, Mercedes, Bosch, etc. come to campus every year for recruitments.

Hi Aju,
Mentioned below are some of the courses that you can pursue:
CATIA V5 (running well as of now), AutoCAD (best tool before CATIA), solidworks, Pro E, Hypermesh, ANSYS, UNIGRAPHICS (current trend).
Stick to the basic tools first like AutoCAD and solid edge and then big tools like CATIA and UG as they can be learnt easily (as far as designing is concerned). If you are interested in analysis Ansys, CFD and hypermesh then go for them as they are the best tools to get trained.