To be able to speak Esperanto correctly, you must know the grammar. We are proud to be able to present you with several excellent grammars: a concise one (an overview of Esperanto grammar needed for basic communication), a detailed one (an abbreviated version of the Plena Manlibro de Esperanto-Gramatiko) and "La tuta Esperanto" (which is also available in the "courses" section and is aimed at those who already speak Esperanto).

For specific questions, there is section called Language Questions. There you will find frequently asked questions about the language Esperanto with answers, and a form to ask your own question.