www.elitedaily.com
If you wanna know more about American culture (or if you wanna do some casual reading on a daily basis), here's a nice website for you. It should be noted, however, that not every writer writes in accordance with the prescriptive grammatical rules, the rules that are employed by, inter alia, the GMAT and GRE tests.
That said, you'll still be able to learn plenty of useful vocab and get a glimpse of the ways native speakers convey ideas in English.
Happy reading!
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