Copy and paste the article in question to a word processing document or a blog.
Then read it through from start to finish once. Read it a second time slowly, very slowly. As you read each paragraph, try to sum up the point of that paragraph in a single sentence. Exactly what was that paragraph saying? Type out or write down by hand your summing up of that paragraph, either in a bolder font above it or below it, putting that paragraph in parentheses.
When you’re done, write out your summing up sentences in order and see if this is a fair rendition of the points from the original.
When you’ve done this with a few articles, you can discuss whether or not you agree, but first you have to become accustomed to accurately representing the thoughts and ideas of the other party.
You can do the same with well written essays, and try to rewrite them from your summing up sentences. This is the method Ben Franklin and Jack London both used to improve their own writing.