I'm aware that many people are still using the old version of my site ( http://bknight0.myweb.uga.edu/toki/
That website will go offline permanently at the end of this month.
The new version of my site is generously hosted by jan Mato and can be accessed at toki.co.nr
I'm aware that my site is a little "outdated," to put it nicely. If I can find the motivation and time, I hope to gradually update the site in the coming months.
A few people have asked, so to clarify: I doubt I'll make many revisions to my lessons any time soon. When I first wrote the lessons in 2004, there was a strong need for TP educational texts. I felt that new lessons were almost necessary, and I hoped the ones I wrote would help popularize Toki Pona within the conlang scene. (And they did!) Fortunately, nowadays there's much more interest in TP, and others have written various lesson sets, some even better than mine, not to mention the new lessons published in Sonja's book. In other words, my lessons aren't "necessary" like they once were, so I'd rather spend my time fixing up other parts of my site.