TOEFL

You should definitely go for:
1. TOEFL.
Tata McGraw Hill – Kaplan.
2. GMAT.
The Official Guide for GMAT 2017 - The Princeton.

Hi,
Kindly, check the listing on Shiksha website:
https://testprep.shiksha.com/ielts-exams-coaching-classes-in-delhi-ncr-categorypage-14-51-930-0-0-10223-1-2-0-none-1-0#cateSearchBlock

Yes you can provide your IELTS scores for admission purposes, but check with the university website once if they accept IELTS scores or not. Most universities do accept them, so you should be fine.

Germany and Poland are some good options. GMAT for your information is not an English proficiency test. However you can take GRE instead of GMAT for MBA admissions. Besides IELTS or TOEFL you can take PTE, CPE etc but check university websites for accepted English language tests. Requirements differ with universities so make it a point to check the university websites. Hope it helped.

Hi Vaibhavi,
Some of the popularly followed books include Target Band 7, IELTS Academic by Simone Braverman, The Official Cambridge Guide to IELTS, New Insight into IELTS, ETS: Official Guide to the TOEFL, Kaplan TOEFL iBT Premier and ETS: Official TOEFL iBT Tests to name a few.

GMAT is the exam you got to crack.

A GRE score above 315 and a TOEFL of 100 or more will do you good. Most Ph.D programs in USA are fully funded, so you need to be accepted first. All the best.

Dear Nasrin, scholarships are merit based, there is no guarantee that an IELTS or TOEFL score alone will suffice. Your academic standing will be evaluated mostly. Of course if you have a great academic record alongwith high IELTS or TOEFL scores you can expect scholarships.
Best Wishes

Hi
All information you required is listed out here for USA. Other countries like canada do have rolling admissions so the best is to shortlist universities and then apply.
http://www.studymsinus.com/list-universities-offering-ms-misismismitm-us/