Probably not. (Serious) opening study should be reserved for those with a firm and thorough understanding of basic principles in endings, middlegames, and some openings. For this level, in my opinion, it's important to specialize in openings that help develop this understanding, without an emphasis on memorization. So, in a sense, studying a small number of openings and knowing them in depth is not bad, but memorization with no understanding should be avoided at all cost.
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I know the study plans here aren't much use if you don't have a premium membership, but notice in the link the 7 openings it's suggested that you learn at least the first 5 moves of. Opening principles are way more important at this stage, but study a little if you want to. This is the beginner's openings link, but if you check out the intermediate plans there are about 50 openings they think you should learn at least the first 8 to 10 moves of. So study if you find a calling to do so; just don't expect it to improve your play much until you've climbed up the ratings a little more. Outside of the Italian game and the Fried Liver, your opponents probably aren't any better prepared in anything than you are so memorizing long lines is counterproductive. You'll be out of book quickly. Sorry my answer wasn't a bit more definite but it really depends on your interest and needs. If you're getting into a playable middle game then you don't need to study anything. If you plan to stay with chess though, you know a little theory will eventually come in handy. Good luck!
http://www.chess.com/article/view/study-plan-for-beginners-the-opening2
Should I be studying chess openings when my rating is 1188 USCF
Well, you shouldn't be memorizing lines from the Najdorf out to 25 moves, that's for sure.
But you should be aware of opening principles, as baddog says.
I would go on to say there is no harm in learning to recognize the standard openings and learning the basics of what they are about. You can do that easily enough just by browsing Wiki.
Personally I found learning about openings exciting even when I was a beginner and it inspired me to study more and play more.
Dec 20, 2015
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#5
Howdy, Ipcress
Opening principles must be understood, but aren't difficult to learn. Also, they won't get you very far. I believe that studying the endgame is more fruitful because it gives you a better feel for the power and strengths of each individual piece. Also, feeling confident about the endgame is a great thing once you get past the smoke of the opening breast thumping.
Should I be studying chess openings when my rating is 1188 USCF