General

• Esperanto: Frequently Asked Questions (FAQ)
• A reply to some arguments against Esperanto
• Psychological Reactions to Esperanto
• The language challenge - facing up to reality (Youtube)
• Wikipedia article on Esperanto
• Prague Manifesto
• Resolutions of UNESCO in favour of Esperanto (1954 and 1985)

Directories

• Esperanto Panorama

Learning

• Lernu! - Esperanto course online
• Esperanto in 12 Lessons
• Learn Esperanto in just 5 minutes a day. For free.
• Esperanto Wikipedia
• Radio in Esperanto
• The Prism of Languages

International Associations

• Pasporta Servo - How do you spend your holidays?
• The World Esperanto Youth Organization
• Esperantic Studies Foundation
• International scouts and girl guides Esperanto League
• Esperanto Pen-pal Service
• International Association of Esperanto speaking cyclists