In this video I'm showing you how to merge data frames with the dplyr package in R. The video includes six different join functions, i.e. inner_join, left_join, right_join, full_join, and anti_join. For each function, I show a reproducible example as well as a graphic, which illustrates how the data is merged.
Also check out this tutorial on the join dplyr functions: https://statisticsglobe.com/r-dplyr-join-inner-left-right-full-semi-anti
In this tutorial, you can find further examples, which are a bit more complex (e.g. merging multiple data frame or joining by multiple columns).
Have fun with the video and let me know in the comments, if you have any feedback or questions.