As you may have noticed if you tried to access this site in the last couple of days, it was not working. All you got was an “Error establishing database connection” message. I have been working to restore the site and also find out what exactly happened, but after too many hours pouring through server reports I figured it makes more sense to just start fresh.
The site went down when the hosting provider made an update to their server infrastructure. In the process the main database of this site got mangled to the point where it cannot be recovered. Using a backup is also not an option because of a new feature in the server infrastructure. Bizarre, but thus works the internet sometimes.
Regardless, the Lesson Files you are looking for are all here and available to you. My apologies for the delay!