Which is the best software as a mechanical engineer I will learn?
...and what will be cost of learning if I learn?
Depending on your inclination (design or maths/analysis), here are a few software you could get trained in - (these are software used by a majority of companies in India)
• AutoCAD : 2D design
• Creo and Solidworks: 3D design
Software that helps analyze the behavior, stresses, and deflections in complex systems.
•Ansys and Nastran: Structural linear/nonlinear and Dynamics analysis.
• Matlab: Numerical computation, visualization, programming.
There are many online courses that will help you get started for free.
There are certification courses for most skills and tools out there. If you think, official certification would look great on your resume, by all means, do get one. However, most exams that need to be taken for certification are not cheap. Do tell us what you choose, so that we can tell you the pricing for it. @Prajapati Hemal M
Since robotics is on the rise, some sort of Artificial intelligence background will prove useful.