What is process to apply for jobs in Germany from India.

This is a very general question. The Internet has many sources with information about how to find a job in Germany. This forum is among them, and certainly not the worst. Did you read some of it?
A JSV is of course helpful (it's a pity it's not available in your country), but does not guarantee success. More important are matching skills (especially those that set you apart from EU citizens, who must be hired first, by law) and above all German language skills (you did not mention what your level is here).
In a cover letter and your CV (which ideally are customized for each appliocation) you should explain what you can and will do for the company. Basically, you must convince the reader that it is in his/her own interest to hire you. This isn't easy and often requires much reding between the lines, online reserach about the company and job and  guessing what they might really want or need.
Good luck!