I went ahead and opened/created/installed a Wiki for maintaining documentation on my site.
I’m currently documenting my second major for-free product, namely the TGB Super Starter Kit (SSK). There is a lot of work yet to do in terms of releasing, organizing, and documenting, but you can download, install, and try the kit now. Simply go to the SSK page and follow the directions you will find there.
After I finish up the SSK release and documentation I will move the TSTK and other lesser-product documentation over to the Wiki. I will continue to provide support for my book here, but using a Wiki for documentation, tutorials, etc is far superior to using the WordPress ‘Pages’ mechanism.