You will know about function in detail.

This document will give a brief idea about data frame

This will give you a brief idea about the array

This document will give you a brief idea about matrix

This document will give you brief idea about lists

This document will give you a detailed idea about operators.

This document will give you a vast idea about vectors in the R programming language.

Lecture - 01 - Getting Started with R | Topic 01 - String | Just go through every topic and line of this document

This plot helps to create beautiful networks.

There I just try to show some data visualization with the basic R code.