Aviation

Not only aviation but all courses require good English so you should start to prepare and practice the language.

You can take pilot training with any stream. But for getting Commercial Pilot Licence, you need to clear 6 DGCA exams and for that, you need physics and Maths. So I recommend you to do 12th with open school with at least these two subjects. then you will be eligible for it.

There is no course which is good or bad. This decision depends on your skill sets. You have to do an honest introspection and put down your strengths and weakness. The next step is to go about identifying careers which require your skill sets. This requires meticulous planning.

The second is to complete an aviation degree at a college or university through the FAA's Air Traffic Collegiate Training Initiative program. The final option is to complete either three years of progressively responsible job experience, a Bachelor's degree or a combination of the two.

Eligibility Criteria
Good in spoken English
18 - 26 years of age
10+2 with degree in hospitality, or other graduate degree
Height of min 155 centimetres,Weight proportionate to the height for Girls
Height of min 170 centimetres,Weight proportionate to the height for Boys
Eligible for an Indian Passport
Unmarried
Perfect eyesight
Good health
Clear complexion

This varies from company to company and also in the batches.

You may visit DGCA portal for details on approved flying clubs. You may take flying training and gain experience to become a Commercial Pilot. You can also appear for NDA examinations conducted by UPSC to become Flying Pilot in Indian Air Force.

Please refer to the following: http://www.iata.org/training/subject-areas/Pages/ground-operations-courses.aspx

Yes, you can join aviation industry. You may do multi disciplinary M.Tech in aerospace degree offered by various universities. You can join Indian Air Force in aeronautical engineering (Electronics) branch also. IAF will train you on avionics and related fields.