Class 11

You can apply for the it your 12th standard. You will need following things
1) You have to take SAT and TOEFL exam.
2) Highschool transcript
3) Recommendation letter from counselor and teachers
4) Extracurricular activities.

I'll prefer you to join any other coaching institute like Allen and Resonance as the coaching institute mentioned by you is also quite good. But the main problem is that their passing ratio is not that good.

Yes, you can become a lawyer. You will have to give entrance exam for a 3 year law course.

Hi Harnoor,
Kindly go through the detailed article on career guidance for Interior Designing. Click the link below:
https://www.shiksha.com/careers/interior-designer-65

Yes, NIOS are now allowed to appear for NEET. From 2019, NIOS and open school students are eligible to apply for NEET.
All the best!

I recommend you to complete 12th. Post that you can do your Bachelors and short term courses too alongside. Short term courses depend on your interest and skill sets. For example, beautician and fitness courses, music, photography, soft skills and personality development, baking, language learning and technical courses. You can do loads of free online courses and then even consider paid courses that give you a certificate too.

There are lot of opportunities in the filed of commerce, just make sure that to learn basics in this stage only.

Yes, if you are applying under home state quota, you should have proof of your residence in that state I. e. domicile. It is easy to get domicile. Normally, it takes 5 days in the process.

How much percentage do you have? The eligibility is considered from percentage and not marks. Also, the best career option is that in which you have interest. If I suggest you to do B.Tech, you will not do it, because you can't. So, choose a course that interests you. All courses have good opportunities. You will get Jobs and Salary based on your skill. Also, you need to focus on your class 12th now. After class 12th, choose a career based on your interest and marks.

Not at all. The gap shouldn't make much difference. Though you may have to provide a affidavit stating your reason to do so if they asked for it. Rest assured, you will not be disqualified or asked to produce any extra document.