Online courses:
- Duolingo https://www.duolingo.com/course/eo/en/Lerne-Esperanto
- Lernu! is a great multilingual course to learn the gramar: https://lernu.net
- https://esperanto12.net is another good multilingual online course for the basics
Vocabulary:
- Anki is a multi platform vocabulary app with hundreds of prepared learning decks: https://ankiweb.net/shared/decks?search=esperanto
- Drops is a nice app to learn vocabulary on android and iOS: https://languagedrops.com/language/learn-esperanto
- Clozemaster is good to learn vocabulary in context https://www.clozemaster.com/
Video courses:
- Exploring Esperanto has a Playlist with many gramar and vocab lessons https://www.youtube.com/watch?v=O57dXSgUAR4&list=PLok8ZOY6AYjiNPWsTAaKskKB2uuojCnAl
- American Esperantists is a collection of video lessions: https://www.youtube.com/c/AmericanEsperantist
- Learn Esperanto - Direct Method teaches Esperanto using the "direct method" so it teaches Esperanto using only Esperanto https://www.youtube.com/channel/UC5p3lVv0FLmLoExL-_iU2DA
Easy texts:
- https://uea.facila.org/ publishes texts in easy Esperanto
Beginner friendly books:
- For getting started, read Claude Piron’s Gerda Malaperis! – it’s a mystery, in simplified Esperanto, which progressively becomes more complex