Here is George Orwell‘s article titled Politics and the English language; there are six simple rules that Orwell lists, which, in his own words,
These rules sound elementary, and so they are, but they demand a deep change of attitude in anyone who has grown used to writing in the style now fashionable. One could keep all of them and still write bad English, but one could not write the kind of stuff that I quoted in those five specimens at the beginning of this article.
I learnt about the essay via this article, which is also a good read. Have fun! While you are at it, take a look at this book, especially the articles Why I write and Poetry and the microphone, the later being about wartime broadcasts to India.