Dear Mr. Shubh,
You will get the job if you qualify patent agent exam plus diploma in IPR.
Main Industries are Law firm, LPO, Pharma, KPO and biotech companies.
Job profile would be like patent analyst doing analysis, all the time setting in a corner, another one as patent agent frequently going to patent office and meeting Examinars. You can also start your own practice after 5 to 6 years of experiance.
Starting salary would be approx 15000 to 35000 rupees per month depending upon the profile of company and candidate.
There is no specialized book but you can refer patent mannual and Indian Patent Act available at IPO website.
You need to have guidance to start with.
Please note that this is my personal opinion.