Not satisfied with current job - what to do?

Hello #-Link-Snipped-# Welcome to CrazyEngineers. I just moved your post to Jobs section.

Coming to your question, from what you've posted here's the scenario -

1. Not great grades to bank on.
Though marks are not much of a factor, they sure do come handy while applying for job as a fresher. The only thing that can cover up for poor/average grades are technical skills. Even if you master one technical skill, that would be the highlight of your resume.

2. Still in training period
Assuming that you are still only a few months old in the company, isn't it too early to say that you hate the job without really seeing what prospects it holds?

3. Assumptions & Prejudice
We all have some kind of picture in our mind about life @ work/job. Most seniors would tell you that the picture they had in mind is completely different from what the real situation is. It is ok to be surprised by the fact that your expectations didn't get fulfilled at your current job, but that shouldn't deter you from take it as a challenge and making most of it. (Especially when you have no other skill to follow).

4. Leaving something because it's tough
You have written that automation testing might not be easy. Well, let me tell you that no matter what field of job you choose, it's always going to be super difficult at first. That's never a reason to stop doing it. If the resources available at the training are not enough, you could use the Internet, books & tons of other material to become really good at automation testing. You could start new discussion & ask queries on CrazyEngineers to solve yours doubts.

I'd not quit the current job without getting some experience. You're an 'insider' now and it'd be foolish to become an outsider if you are not confident of getting a job based on your marks and skills.

Divert your attention to something else - something that will help you advance your career and build some experience on your resume.

I am in the exact situation as you the difference being that i am from mechanical branch. 4 month as a trainee i dont have any work to do and just spend my day almost doing nothing. This is making me frustrated and i am not willing to continue further after training period unless i get in design field.
Also this is like a wake up call to me that i should study further mostly m.s.
Can u provide some website where i can get information regarding abroad studies.

First.. Never ever listen to this,

siddheshnisali already heard that automation testing is not easy one

Are you afraid of complex work? because, In general that's what satisfies you.
2. Most of people hate their job. Better to accept the challenge and work. If you are not happy with the current job search for another one. Also, learn new skill/get training for your desired job.