IIT

For FIITJEE AITS, the paper is sometimes 60% out of syllabus and the ranks predicted by them are sometimes very demoralizing. My average JEE Mains score in FIITJEE AITS was 50/360, while I got 169/360 in the actual exam.
For Resonance, tests paper is a bit tough than the actual one, but is properly set and considering the pressure in competitive exams, it almost accurately predicts your final score (still not rank).
So, in my opinion, you should consider following things in mind before choosing a test series (in descending order of importance):
Level of Difficulty: Not easy and not very difficult (a bit difficult is perfect).
Solutions provided by the institute.
Time of Exam: The time period should exactly match the actual exam.
Number of people giving tests: That is, the popularity of test series.
Detailed analysis of your answers.
In my opinion, you should prefer Resonance or Aakash over FIITJEE AITS.

Smart practice is the key to crack IIT examination. Don't forget that cracking IIT exam is tough and you need to score 300+ marks. This is impossible without smart practice. Let me share some of the personal tips and tricks that I followed to get into IIT which may also help you.
1. Understand what works best for you
You need to understand what is the best schedule "you can follow" and not the one you force on yourself. Find out the best time that suits you or which place in the house you are comfortable in. The more concentrated you are when you study, better will be your preparation. It may sound silly to some, but this has helped me prepare faster and better.
2. Work on your weak areas
Everyone has a strong subject which they understand easily and can solve questions correctly without worry. The problem is with the weak areas. I myself was not good in chemistry subject. Then, I started working on it more and made it the primary focus of my studies. Within no time, I could easily convert it into one of my strong suits. So, make your study timetable that you are comfortable with and allocate more time to weak topics.
3. Practice as much as possible
Practice is the backbone of your path to rank in IIT. It is the most crucial element. Most of the students today focus only on studying i.e. reading the chapters and reading the illustrations and scribbling on the pages saying that they practice. When the real exam happens, these students say The paper was very difficult or they did not get much time.
For example, a pilot cannot learn to fly by reading the books. They spend a lot of time practising. Practice is the most important point that you need to focus on in case you are really serious about cracking the IIT examination. For practice, I personally used the CareerOrbits IIT-JEE course and would recommend the same to you too. Their questions from the CareerOrbits courses are far better than the branded institutes and cannot match their quality.
4. Revise repeatedly all the incorrect attempted questions
Always revise each and every incorrectly attempted question repeatedly. If you miss this, you do not get the rank you want. By practising repeatedly, your brain automatically grasps the concept and after a certain point, you can solve questions with ease. And yes, it was easy to do so for me since the JEE Advanced course from CareerOrbits tracked all the questions that I attempted wrongly and compiled 3 revision lists for me.

Hello,
IIT HSEE needs a proper direction and guidance. A serious commitment and dedicated hard work can ensure success to the exam. Below are the important pointers to keep in mind while preparing for the exam:
A- Understand marking scheme
B- Understand the format and pattern of the exam
C- There are two sections, a- Objective questions which includes Maths, Sociology, Geography, Economics, English, General Awareness, etc. and b- Subjective questions.
D- Proper time management and energy focus for right subjects for the exam.
E- As per the marking scheme there are no negative marks. So you might guess and mark in case you are not sure. But keep it as a last option. First, prepare for 100% and try to get everything right.
Last but not the least, keep calm and be tension free.
Best of Luck. Prepare well.

IIT Madras conducts the exam HSEE for admission in 5 year integrated program for Masters in Arts.
Here are a few important tips to crack the exam:
1. Always study by keeping the syllabus side with you so that you can access only those topics which is in the syllabus.
2. Try to make a list of weak topics and then, work on it to make it strong so that less questions are left unattempted.
3. Never try to leave any topic. Cover all the topics with full preparation because every question contributes marks for admission.
4. For analytical ability, one can score more by practice more and more question.
5. For General Knowledge, it is just to check the awareness of students about national and society so for this, regular study of newspaper is the best way to score more in this section.
6. For Quantitative analysis, questions are from class 10th level. Learn shortcuts technique and tricks as much as possible that you can resolve any problems without difficulty within few times.
7. For English language, this section is only to check the basis understanding in English. Try to study basics from books and work on vocabulary which helps to score better in this section.