The Gramática del indoeuropeo moderno is the translation into Spanish of the Preface and Introduction sections of A Grammar of Modern Indo-European, the main work of the Indo-European Revival Association.
Translations of those introductory sections into French and German are also being prepared. The rest of the book is deemed too specialized (and sometimes subject to future change) to spend our time and effort translating it – the book is, however, licensed under GFDL – CC-by-sa, so that anyone can translate it into any possible language, and then redistribute/publish it elsewhere.
There are also some Wiki Websites prepared to host the translations of the book, apart from other relevant information about the Proto-Indo-European language and its revival as a modern language, namely Indo-European (in English), Indo-Europeen (en Français), Indogermanisch (auf Deutsch), indoeuropeo (in italiano), etc. (visit europaio.org and sindhueuropaiom.org for more languages)
Your Indo-EuropeanÂ Language Team.