What do I need to learn? =D Options

[axisof3vil]

Hey guys!
I'm looking at building a website for my new gaming community that my friend and I are making. I already have the design in mind, and I have a steadily-increasing knowledge of HTML, and CSS. The basic idea for this post is: What do I have to learn to make this happen? I am not buying from professionals because I am only 15, and don't have an endless supply of money (plus I'm already going to pay for hosting, game servers, etc, but you don't really need to know that).
I am planning on making the first page with a news section, like a blog, with an archive and an automatic post-to-twitter option(this is called a dynamic website, correct?). For this I know i need knowledge of PHP, and perhaps databases? I am also looking to build a forum, which I am thinking of just getting software for (how hard would it be to build my own?), and obviously I need to create a login/signup option, which i know would involve mySQL and php.
I believe that is everything I need help with. If you can explain these things to me, I would greatly appreciate it, or if there is another thread that i looked over and missed a similar thread, please direct there if you will.

If you could help me out I would greatly appreciate it!

Thanks!!
-Matt

This post has been edited by axisof3vil: Feb 18 2012, 07:35 PM

[hosting charges]

You may use free ready to install forum software like phpbb, etc.