Poland

Dear Ishan,
Poland is not a bad choice but Canada is one of the most popular and best. If you have a strong profile I will suggest Canada. You may further zero in based on your budget, climatic conditions and University admission requirements.

Yes, you will get salesman jobs (hourly basis) in departmental stores. Also, jobs related to delivery boys is also accessible.
All the best.

Yes, you can apply for the stay back card after graduation. More details can be found on the Poland immigration website. Generally, you can stay not longer than ten years on basis of stay back card unless you are qualified to become a PR. Please check Poland immigration website for this information.

Hi Soham,
Unfortunately, you won't have options as 49% is not accepted by any university abroad. 55% is decent enough. Look for options in India and maintain a decent academics before planning to study abroad. Understand that study abroad is not easy and if you don't qualify, they won't let you in.

Hi Soham,
Below 50% is not accepted. A poor ranking university can admit you but visa chances are low. In general, you must be qualified to study abroad and 49% is not an acceptable score.

Hi Pranav,
Generally, the process is not difficult and embassies are very cooperative if your application is complete. If you have not ever applied for visa before, it is better to take help of a consultant. Read the complete information here and keep a recheck on it.
http://www.newdelhi.mfa.gov.pl/en/c/MOBILE/consular_information/visa_information/

Hi,
The first link I shared gives you the complete information about Poland's study requirements. If you are taking a short term course, its possible that you don't require IELTs.