Nobody doubts the benefits of being bilingual, but how do you know which language to learn? It’s a big time investment, after all, and if you don’t actually use the language you teach yourself then you might end up forgetting all that hard-won knowledge anyway.

With that in mind, we put together a short list of the five most important languages to learn in this day and age.

Spanish

The obvious choice, right from the top of your list of high school language classes, is also one of the most relevant. There are 330 million native Spanish speakers, and just here in the United States, around 35 million people use Spanish at home.

As far as practicality and use go, Spanish is a good choice, and Rocket Spanish Language Learning: Level 1 is a scientifically-designed language learning class that takes only minutes per day to take you from a beginner to intermediate level Spanish Speaker.

Mandarin Chinese

Though it might seem like a left-field choice, Chinese can be really useful in business or politics. It’s the most commonly spoken language in the world, with over 982 million people speaking it natively while over 1.1 billion have learned it as a second language. Granted, the majority of those speakers live in China, but that’s likely to change soon.

And if you’re going to learn Chinese, Rocket is your best bet. Rocket’s Level 1 Class uses state-of-the-art voice recognition systems to give you custom feedback and help you pronounce the words organically. Plus, the language and culture lessons teach you the finer points of Chinese grammar and culture, to avoid an embarrassing faux pas once you start having conversations for real.

Italian

Italian is the language of classical music, fashion, art, food, and top economic brands — it’s no coincidence that the Shakespearean play Romeo and Juliet is set in Verona, Italy. And though most English-speakers find Italian more difficult than Spanish, the mostly phonetic sounds and verb tenses make it easier to become fluent in once those first barriers are broken through.

And Rocket can get you there with Italian Level 1. The genius of Rocket’s classes is that they break these complex problems down into digestible chunks to help you learn the words organically so you can pronounce them naturally.

English

Though nowhere near as prevalent in foreign cultures as pop culture would have you believe, English is still the dominant language on the internet, and therefore likely to be an important skill in our increasingly digital future.

The reason Rocket English Level 1 is the best way to learn this language or any other, is because it uses Miller’s Law, or “chunking,” a teaching technique that uses psychological principles to make sure you’re never overwhelmed, but never bored either.

German

Why learn German? How about because Germany has been Europe’s most dominant economy for a decade, the fourth largest in the world, and their language is the most spoken on the European continent? That’s 105 million native speakers plus 80 million more who speak it as a second language. If you plan on doing business in Germany or even just visiting, this language can make all the difference.

And of course, Rocket can help you with Rocket German Level 1, employing all the same effective techniques we outlined for the other languages.

Best of all, each of these classes is available right now for $59.99, or 59% off — except English, which is just $39.99. Whether you’ve been putting off learning a new language or just decided to start planning a trip, there’s never been a better time to start learning than right now, and there’s never been a better option than Rocket.