Esperanto-speakers are all over social media, such as Facebook, Twitter, and Instagram.
Resources for advanced Esperanto speakers include:
- La Nova Plena Ilustrita Vortaro de Esperanto, 2005, the most extensive, authoritative Esperanto-only dictionary, available in printed form and online at NPIV.
- Plena Manlibro de Esperanto-Gramatiko by Bertilo Wennergren, on the grammar of Esperanto (available in either printed form or online).
- Reta Vortaro, an online multilingual dictionary.
For those who want to contribute to the progress of Esperanto there are many avenues open. You can write articles for various Esperanto magazines and on-line projects, for example:
Further sites are listed on Esperanto.net.