I want to be able to create a new Google Colab notebook for R on my own. In previous questions/answers and generally on Internet I see that people leave a link or a blank R notebook that we can use.
Would you please let me know what are the steps to create one on my own.
I'm not sure if Google Colab still allows R, but you can try this link. Save a copy in your Google Drive, and make any changes you need.
Personally, I recommend using Kaggle R notebook which supports R and Rstan by default.