R language plays a major role in big data analysis. It is an open source programming language which mainly deals with statistical investigation of data.

R can be self- learnt easily with the help of some online courses or books.

After installing R and R studio, I would suggest to go with some books to kick start. Then read online, take some courses as in udemy and read more and more books. And keep practicing in the R studio. Even if you are without any prior programming experiences, this language is easily understandable and well structured.

Online courses are really worth as it gives you a one to one connection with the instructor while practicing. If you are serious of learning R, don’t be hesitated to take even paid courses.

Recommended books

R for Everyone: Advanced Analytics and Graphics 

Big Data in Practice : How 45 Successful Companies Used Big Data Analytics to Deliver Extraordinary Results

R’s creators: Ross Ihaka and Robert Gentleman (Stable beta version in 2000)

Again problems with apk installations via itunes..?
Apple had removed that app section in the latest version of iTunes 12.7 [released on September 19th 2017]. So there after this simple drag and drop solution as in the post Where in the world are the apps in iTunes library? helped to rectify the trouble.
But installing from the iTunes is not working for some times even with this drag and drop solution
I got a solution for this from Apple support site itself. Just go to this link and download the iTunes version Apple released
https://support.apple.com/en-us/HT208079
This itunes version can be used to download your app. And with this the previous App section is back in our ITunes folder.