- Kurso de Esperanto: http://www.kurso.com.br/index.php?en
- Lernu Courses : http://en.lernu.net/kursoj/index.php
- Unilang's Esperanto Course: http://www.unilang.org/course.php?res=64
- Free 1-hour lecture in EO: http://edufire.com/classes/6004-esperanto-in-1-hour-overview-of-a-fascinating-contested-language
- Being colloquial in Esperanto: http://weber.ucsd.edu/~dkjordan/eo/colloq/colloq003-Contents.html
- Elementary Esperanto Primer: http://ka5nom.mine.nu/esperanto/eo/textbook.pdf
- Enrique Ellemberg's EO site: http://www.esperantofre.com/
- David Simpson's EO site: http://esperanto.davidgsimpson.com/index.html
- Facila Vento: http://facila.org/
- Vikipedio: http://eo.wikipedia.org/wiki/Vikipedio:%C4%88efpa%C4%9Do
- Esperanto Info: http://www.esperanto.info/
- Edukado: http://edukado.net/
- Don Harlow's building words with affixes: http://donh.best.vwh.net/Esperanto/affixes.html
- A complete grammar of Esperanto by Ivy Kellerman Reed: http://www.gutenberg.org/ebooks/7787
- Lernu's detailed grammar: http://en.lernu.net/lernado/gramatiko/detala/index.php
- Lernu's introduction to the language: http://en.lernu.net/enkonduko/lingvoprezento/alfabeto.php
- La Tuta Esperanto: http://en.lernu.net/lernado/gramatiko/seppik/index.php
- Lernu's grammar drills: http://en.lernu.net/lernado/ekzercoj/gram/index.php
- Being Colloquial in Esperanto: http://weber.ucsd.edu/~dkjordan/eo/colloq/colloq.html
On-line Dictionaries:
- Lernu Dictionary (right handside of site): http://www.lernu.net
- Dictionary EO <--> FR: http://esperanto-panorama.net/vortaro/eofr.htm
- Vikivortaro: http://eo.wiktionary.org/wiki/%C4%88efpa%C4%9Do
- Vivo EO <--> EN: http://kono.be/vivo/
- English-Esperanto Dictionary by C. F. Hayes and J. C. O'Connor: http://www.gutenberg.org/ebooks/16967
- Tatoeba (phrases and expressions): http://tatoeba.org/eng/
- Sonja's English-Esperanto Dictionary: http://esperantodictionary.org/index.php
On-Line Reading/Literature:
- Gutenberg's library of books in Esperanto: http://www.gutenberg.org/browse/languages/eo
- Marvirinstrato: http://timwestover.com/marvirinstrato/?page_id=7
- Lernu's library: http://en.lernu.net/biblioteko/index.php
- Libera Folio (Sendependa Movada Bulteno): http://www.liberafolio.org/
- Jurij Finkel's Collection of Esperanto literature: http://www.esperanto.mv.ru/ESP/literaturo.html
- Lernu's eBooks: http://en.lernu.net/lernado/elsxutajxoj/libroj.php
- One language for the world and how to achieve it: http://miresperanto.narod.ru/biblioteko/pei.htm
- Libera Esperanto-Libro: http://ikso.net/en/libera/index.php
- 200+ e-Libroj: http://i-espero.info/files/elibroj/
- Le Monde Diplomatique (Esperanto): http://eo.mondediplo.com/
On-Line Listening:
- Radio Verda (Vancouver, Canada): http://radioverda.com/
- Radio Kubo (Cuba): http://www.ameriko.org/radiokubo
- Pola Radio Varsovio (Poland): http://www2.polskieradio.pl/eo/
- Radio 3zzz (Australia): http://melburno.org.au/3ZZZradio/
- Parolu Mondo (Brazil): http://parolumondo.com/
- Radio Cina Internacia (China): http://esperanto.cri.cn/
- Esperanta Retradio (Internacia): http://members.aon.at/aldone/peranto/index.html
- Muzaiko on Radionomy: http://www.radionomy.com/en/radio/muzaikoinfo/listen
- Esperanto-USA: http://www.esperanto-usa.org/
- Universala Esperanto Asocio: http://www.uea.org/
- Tutmonda Esperantista Junulara Organizo (TEJO): http://www.tejo.org/en
- Sennacia Asocio Tutmonda (SAT): http://www.satesperanto.org/
- soc.culture.esperanto: http://groups.google.com/group/soc.culture.esperanto/topics