I tried to begin with Coursera but their free trial also needs credit card details which i dont have. So if anyone can suggest me good tutorials to learn R programming.
Before starting with actual R programming, you should familiarize yourself with some basics. I recommend the following tutorial (intended for researchers accustomed to SPSS, SAS, STATA etc.):
I personally found MOOCs very helpful for R, especially some of the open projects and assignments given. I took the John Hopkins Data Science Specialization on Coursera (when it was still free!) but here is a list of some other MOOCs: https://digitaldefynd.com/r-programming-courses-certifications-tutorial-training/
Want to add to Tobias M. Schifferle 's answer. DataCamp also provides a free classroom plan if you teach. Maybe it will work for you also. Check here https://www.datacamp.com/groups/education
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