Learning a second language "opens up the mind to an entirely new way of thinking," says Noe Villela. You'll notice and appreciate parts of the world you never before experienced.
It's also possible that learning a new language can make you smarter — though the jury is still out on this issue. Some studies have found that being bilingual can improve cognitive skills, but more recent research disputes these findings.
One of the best ways to learn a new language is through immersion. Get started with this free online tool that replicates the immersion experience.