structured learning
Introduction to R
https://www.datacamp.com/courses/introduction-to-r
Try R
http://tryr.codeschool.com/levels/1/challenges/1<- vectors, matrices, summary statistics
R programming fundamentals
http://www.pluralsight.com/courses/table-of-contents/r-programming-fundamentals<- functions, flow control, packages, import data, exploring data with R
data.table
https://www.datacamp.com/courses/data-analysis-the-data-table-way
Data Analysis and Statistical Inference
https://www.datacamp.com/courses/data-analysis-and-statistical-inference_mine-cetinkaya-rundel-by-datacamp
Introduction to Computational Finance and Financial Econometrics
https://www.datacamp.com/courses/introduction-to-computational-finance-and-financial-econometrics
dplyr
https://www.datacamp.com/courses/dplyr
Build Web Apps in R with Shiny
https://www.udemy.com/build-web-apps-in-r-with-shiny/?dtcode=JB9Dbu61IsjQ