Here’s a detailed comparison of the best (and worst) online German courses if you’re looking to learn German in 2025.

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  Courses

Want to learn Puerto Rican Spanish? Learn these 30 Puerto Rican slang words and expressions to sound more fluent.

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  Speaking

Adverbs are a crucial part of learning Spanish. Learn more than 60 adverbs, their types, when to use them, and useful examples right here.

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  Grammar

Here are a bunch of different ways to say ‘thanks’ in Spanish (beyond just using gracias) and some essential responses.

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  Speaking

Learn these essential Turkish phrases and expressions in preparation for your next trip to Turkey.

Possessive adjectives in Spanish help us identify who a noun belongs to. This guide will show you examples of how Spanish possessive adjectives are used.

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  Grammar

A recent study published in the Journal of Neuroscience has proven that sleep may be critical to successful language learning.

There currently is no Thai on Duolingo, but there are some even better alternatives for Thai learners.

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Here’s a straight-forward guide on the most common ways to say hello in Japanese.