SAT

After 12th, you need to take SAT in order to be eligible to apply to a lot of major universities abroad. However, it is not compulsory. Some colleges do not require SAT scores. Some require ACT. But some require none of them. I would suggest you take SAT preferably in 12th grade or even after that as soon as possible and then look into individual websites of the colleges you want to apply to. To check if they accept TOEFL or IELTS. Both of them are English tests. some colleges ask for TOEFL and some want IELTS scores. If you don't know how to get started, attend some study abroad fairs.

GRE is for PG or Masters level studies in USA. SAT is for undergraduate. First learn about the differences and decide what you want to study.

You have to take SAT 1 and SAT 2 doing separate registration for both.

Hi Ryan,
You have to give your SAT and SAT subject tests or instead of SAT you can choose take ACT with writing. Please check the university website for clarity.

Hi Nimitt,
The best strategy is to keep taking mock tests regularly. If you have already taken the SAT you know your weak areas. College board has plenty of resources for online study. Revise and keep taking mock tests regularly. Work harder on sections where you scored less and see how can you improve and give 100% to the sections you are confident in. Analyze the results.

Hi,
SAT is the exam taken to study Bachelor's degree in America. You can take the SAT if you plan to study your undergraduate programme in USA but before you apply you should contact the universities, you have big gap year and must be accepted by the university.

Hi Sriram,The Syllabus for BITS HD Entrance Exam is as follows:
Core Mathematics
English Language Skills &Logical Reasoning
The Technical Domain- ( BE/B.Tech Course Complete Syllabus)
For more details, check out the brochure at: http://www.bitsadmission.com/hd/Brochure_2018_HD_April_9th.pdf
All the best.

You can buy the following books:
1) The official guide for SAT
2) Barron's books
3) Kaplan books.

If you want to start your Bachelor degree in 2019, then you have to take SAT in October, November or December.

Hi,
I'm sharing to you the link in which you can find all the sample papers of SAAT Exams. This will help you to prepare for your upcoming exams. As I can't attach the PDF here I'm sharing the link for your reference. https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/university/siksha-o-anusandhan-university/exams/amp/saat/question-papers&ved=2ahUKEwjQsqnjuMjaAhVBMo8KHfzYDIgQFjAAegQIBhAB&usg=AOvVaw2oh3VfN2XRMcAW3LjGwmF3&cf=1
All the very best for your future studies.