Hey
I am Asmi Goel in prefinal-year pursuing B.tech from University Of Petroleum And Energy Studies. I want to contribute in OpenRefine Projects.
Please guide me regarding how should I start.
Hi @Asmi_Goel, welcome to the project!
There are plenty of ways to contribute to OpenRefine 
We have listed some in the CONTRIBUTING.md file at the root of the repository.
If you would like to make code contributions, then I hope that you find our first code pull request guide useful - I have been working on improving it recently. Let me know if you see areas where it could be improved or if you have any question.
Thank you so much for sharing these links, these are very helpful.
I want to make contributions for Outreachy mainly in OpenRefine projects. I have applied for initial application round for Outreachy.