Hi, I’ll talk about free test series available. If you want to join any coaching class/paid test series you can join ACE, Testbook , Made Easy etc.
Okay, then what to do with test series ? Usually test series provide following type of test
- Chapter wise
- Mock Test
- Aptitude Tests (Previous year papers from all branches)
Let me be honest, I feel that neither Chapter wise or Subject-wise tests are necessary. Only full length mock tests are needed for GATE preparation. Though at the same time, I will still recommend from where to get these tests.
I’ll tell you how you can do this kind of tests for free.
Chapter Tests -> Doing this tests from any paid test series is not required, free stuff is enough. You can get chapter wise test questions from Reference books. Newgradiance is enough for chapter tests for many subjects. They are free. Gateoverflow book by Gateoverflow also contains chapter wise test series. You can find Gateoverflow book at Gatecse.
Subject wise tests -> Doing this tests from any paid test series is not required, free stuff is enough. You can get whole collection of subjectwise tests free of cost from VirtualGate which is sponsored by Techtud . Doing all tests from NewGradiance may also serve purpose of solving Subject-wise Test series for subject it provides.
Full Length Tests -> For this I believe best strategy would be not to see any questions from few papers. Example -> Suppose I’m preparing for GATE 2017 and I want to have few “Real” mocks, in that case what I’ll do, I wont touch GATE 15 & GATE 16 papers while practicing questions. Then when I’m done with preparation, I have 5 “Real” GATE papers for giving Mock exams. I’ve done this , I’ve used 2 papers of GATE 15 as mock exam, for getting online touch we can use online calculator and pdf reader. Believe me previous year mocks are best test series possible if you have not seen any question from that paper. In case you have solved few questions from them, it is useless (In my case I used to remember all questions.)
Apart from this VirtualGate which is sponsored by Techtud is also very nice resource for getting 3+ Full lenght tests. They have already released virtual GATE 2015,2016-1,2016-2 and we can expect at least 2 more in 2017.
About Aptitude Tests -> You should try to solve all previous year aptitude tests papers from all branches. It’ll help you getting idea about Aptitude questions in general. You can use http://aptitudeoverflow.in/ for getting difficult questions.
Link to previous year aptitude questions Till 2015 -> https://drive.google.com/file/d/0Bzhmcv2IuX-RR0hFZllheVNHVHc/view?usp=sharing
For after 2016 aptitude sets check respective IIT/IISc site for GATE and download papers. Remember all papers for any branches in same time slot have same aptitude questions.