loops-apply-r IMDb_Economist_tv_ratings.csv courtesy of tidytuesday View the rendered RMarkdown as HTML here. Overview of lesson 1. R basics - vectors, matrices, lists, logicals 2. Iterating through vectors and matrices with for loops 3. Vectorized vs. sapply vs. for loop Inspired by this post 4. Looping over a vector or list: sapply() or lapply() 5. Looping over a matrix/data.frame: apply() 6. Faster looping with future.apply Here's a Data Camp tutorial to learn more about paralell programming in R -- specifically future and future.apply()