Sindarin/Quenya guidebook

A while ago, The Onion reported that Klingon speakers outnumbered Navajo ones. Sometimes a fictitious language attracts certain kind of geeks and they go nuts over it. The most prominent nut ever is, doubtlessly, Prof. J.R.R.Tolkien. Now there are a great number of disciples of his language all over the world.
T.Ito, who is a linguist and a supervisor of Sindarin pronunciation in the Japanese dubbed LotR films, published the first Japanese Sindarin/Quenya guidebook ISBN:4413034880 (the first, aside from the LotR appendices F, of course). This book will help Sindarin speakers outnumbering Klingon ones.