I was in the same position as you a few months ago. I had an idea for YComb!, and I didn't know any technical guys well enough to be a technical co-founder, so I decided I was going to be the technical co-founder.

I would recommend picking up SAMS Teach Yourself HTML and CSS in 24 Hours: http://www.amazon.com/Sams-Teach-Yourself-Hours-Coverage/dp/... and O'Reilly's Learning PHP, MySQL, and Javascript: http://www.amazon.com/Learning-MySQL-JavaScript-Step---Step/...

Do the SAMS guide first, then O'Reilly. Do the examples, do the examples, do the examples. That's the most important part. Even if you only have a few spare hours per day, you can get through 3-4 chapters of HTML/CSS, but I would recommend only doing one chapter of the O'Reilly book a day, since it's a bit more to learn than the SAMS book. So, it should take you about 3 weeks to work through both of those, and have at least a competent grasp on web dev. From there you can probably make your own decisions about where you want to go from there.

I applaud your efforts, but those tutorials are old and crusty. Please get a good book or two.

http://www.amazon.com/Learning-MySQL-JavaScript-Step-Step/dp...

http://www.amazon.com/PHP-MySQL-Web-Development-4th/dp/06723...

Don't buy both, too much overlap. Just pick the one you like. The latter is long, but worth it. I've got more recommendations if you're interested.