USA

Apply for a job,simple! Visit job portals, check for requirements,an employer must sponsor your H1B visa for the same.

Dear Hemant, alongwith average colleges there are a few top universities too. Remember admission depends on the student's overall profile. Check University of Chicago Booth, UCLA, Babson College, Bentley, Boston University etc.
Best Wishes

You can do a PG diploma in field of your interest

ECE followed by IT.

Hi Bhasha, you can enroll into a specialization Masters in a field of your choice that is MS Marketing or MS HR etc or a certification course. study as per your interest and future plans. Gain some work experience, it will help you understand your own requirements and you can decide accordingly.

Apart from the Ivy League which includes Columbia University, Harvard University, U Penn etc. some popular colleges are- Chicago University, Boston University, NYU, Babson College, Bentley University, Stanford and MIT.
The best option in India is ISB and the IIMs.

Dear Akash, opportunities are immense in research organizations, defence sector and academic institutions. USA is home to the major organizations such as NASA, remember that India is not behind as well. Outstanding academic performance, high level of intellect and problem solving qualities must be demonstrated. Majority of the students pursue their Ph.D as it is required for a large number of jobs in this area. Look for internship in one of the major organizations and establish professional contacts.
Best Wishes

There are two costs you need to keep in mind while looking to study abroad - 1. cost of Tuition 2. Cost of living
The cost of tuition for studying Hotel management from US would be Rs.14-15 lakhs per year for mid-level universities. Top universities will be a lost more expensive.
The cost of living will be higher for US, depending on the city you will live in. it can range from 10-12 lakhs per year. In Canada it will be 9-10 lakhs per year.