Perl 6 book project on github
A Perl 6 book is in development on github. One can try and fork source code. You can catch the authors on
#perl6book on irc.freenode.net. For more info like steps to build the book, pl see the README on github.
PDF versions of this book can be found at
http://puffin.ch/perl/6/ and http://github.com/perl6/book/downloads