HTML first, hands down. Its not a programming language (its a markup language; ie it only controls how things display). However learning HTML will teach you some of the basics and get you into Notepad (lol).
Then move on to Javascript. JS, while still not a programming language, is pretty close to one. By learning JS you will learn the basic basics (if() else() etc).
After JS, PHP. PHP should be a BREEZE after Javascript (it was for me), they are very similar in basic operation. PHP is more strict, but meh. You should also learn MySQL along with PHP, just so you can learn operate with databases.
After PHP, the sky is the limit. If you want to do game programming, learn C++. None of the C languages are easy, and there is always more to be learned... But they are all very powerful.
A couple of hints: NOTES! Make notes! Not only will it help people looking at your code understand whats going on (which is good for when you have to ask for help), it helps you remember why you did what you did and overall helps with organization.
Organization is another HUGE thing to remember. If you can't keep your stuff organized, it will all asplode sooner or later (or your brain will asplode because you can't find what you are looking for...)
I would recommend you start here:
W3Schools Online Web Tutorials
Also, download a better Notepad program than the one your computer comes with. I use Notepad++, which you can download
here. It features tabbed editing (like firefox, you can switch between tabs), so when you have 3 different documents open at the same time you can get through them much easier than windowed browsing. The Search and replace buttons also work on all tabs, so when you want to universally replace a line of code you can just do it once instead of having to do it on every... single... file...