Official Site
Quick-R Beginners
RStudio Studio for R
https://www.rstudio.com
Download DataCamp Free Mobile App
go to https://www.datacamp.com
create a free account and then login
start learning R anywhere anytime
choose the course Introduction to R
get familiar with fundamentals of programming
basics, vectors, matrices, factors, data frames, lists
Google Developers Programming
R 1.1 - Initial Setup and Navigation 2:22
R 1.2 - Calculations and Variables 2:02
R 1.3 - Create and Work With Vectors 3:30
R 1.4 - Character and Boolean Vectors 1:47
R 1.5 - Vector Arithmetic 3:52
R 1.6 - Building and Subsetting Matrices 4:44
R 1.7 - Section 1 Review and Help Files 2:36
R 2.1 - Loading Data and Working With Data Frames 4:34
R 2.2 - Loading Data, Object Summaries, and Dates 4:14
R 2.3 - if () Statements, Logical Operators, and the which () Function 5:24
R 2.4 - for () Loops and Handling Missing Observations 4:39
R 2.5 - Lists 3:04
R 3.1 - Managing the Workspace and Variable Casting 2:57
R 3.2 - The apply() Family of Functions 5:45
R 3.3 - Access or Create Columns in Data Frames, or Simplify a Data Frame using aggregate () 2:10
R 4.1 - Basic Structure of a Function 1:53
R 4.2 - Returning a List and Providing Default Arguments 2:13
R 4.3 - Add a Warning or Stop the Function Execution 1:31
R 4.4 - Passing Additional Arguments Using an Ellipsis 3:30
R 4.5 - Make a Returned Result Invisible and Build Recursive Functions 2:03
R 4.6 - Custom Functions With apply ()
https://www.youtube.com/playlist?list=PLyYlLs02rgBYRWBzYpoHz7m2SE8mEZ68w
Data and Regression Analysis
Principles of Econometrics with R
https://bookdown.org/ccolonescu/RPoE4/