I'm currently working on the tutorial, because it its current state it really isn't that useful. There is still a lot of work that needs to be done, but progress can be tracked on GitHub. Feel free to review / improve it.

• Write tutorial
• External variables, the note about escaping data to safely do data manipulation in databases is not up to standards.
• Debugging, it would be nice if it would contain some useful information about how to do some basic debugging in PHP applications.
• SQL Injection, don't even get me started about this one.
• Variable scoping, do we really need to promote the use of the `global` keyword or the `$_GLOBALS` superglobal without any warning?
• Userland naming, really nice tips going on here
• PDOStatement::fetch examples, make the example better readable when possible.