lernu.net

What it actually is

Structured courses at several levels, a complete grammar reference, dictionaries and a community forum — all free and all volunteer-built. It has been the default starting point for Esperanto learners for two decades. Its advantage over an app is depth: when the grammar surprises you, the explanation is one click away rather than absent.

What it covers

• Grammar
• Vocabulary
• Reading
• Writing

Listed for

• Esperanto

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