No one can dispute that 'R' is fast becoming the analytics engine of choice. Portability, flexibility, development base and cost are just some of the more useful features.
One overlooked feature often is the "try it before you deploy" aspect. Here is a friendly, easy to use tutorial from DataCamp that will let you load the environment and get started on your 'R' journey.
For a more comprehensive discussion of the tutorial go here
They make it fun and instructive with a Vegas gambling scenario that illustrates the workings. If you're looking to get the basics of using 'R', this is a good place to start.