This Wikibook project on the Tanchangya language was started on August 1, 2011. It is an ongoing project that evolves as users contribute to the content and layout of pages.
The end goal of this project is to create an online textbook that will enable people who are self-studying Tanchangya to be able to speak Tanchangya. We will attempt to encompass all aspects of the Tanchangya language, including pronunciation, reading, writing, and grammar.
In the first five years, this wikibook went through several rewrites. Seeing all too few contributors keen on picking up the torch where past editors left off, the book had amassed several layers of rewritten material that did little to provide a clear path through the material. Waking to that reality after considerable discussion, we came up with the categorisation scheme now present on the main page. The Tanchangya/Contents page does not conform with that scheme as it is more an inventory for editors looking for existing material to work with (be it merging, re-factoring, deleting, or rewriting), rather than an index for learners.
Since December, 2011, a good deal of merges and rewrites has been done. As a result we've managed to delete over a hundred pages of unnecessary or duplicate material, navbars, printable versions, and templates. See Removal Suggestions for deletion proposals and discussions. For pages to be merged, see the Books to be merged category for a list of pages in this book that have been suggested be merged and Category:Tanchangya todo for pages with specific work to be done.
There hasn't been much discussion lately on the actual content since active editors Swift) have been working on somewhat separate aspects of this book. We have a section on pages on structure, lesson plans and syllabus. How much to teach and Levels might also be of interest for those so inclined. For development of a consistent curriculum see User:Tanchangya/Tanchangya Curriculum.
Finally; every contributor seems to have a different take on the purpose of this book. In your work, remember that learners have vastly different learning styles and diverse approaches to lesson plans will benefit readers and contributors alike. Until we have fully functioning learning paths, the categorisation scheme on the front page will make the existing material accessible to readers while allowing users to contribute without having to conform to a predefined form.
That said; pick your path and be bold.