Why can't they make it so when you go to the page you see a simple "Instale Apache 2.0" or somthing easy like that!
Read the PHP Manual on Installation and Configuration. Start with "General Installation Considerations" (which is only one page), and then move on to the section relevant to your operating system.
There will be quite a few options, but then that's because the PHP Manual caters to people with varying setups. After reading the notes relevant to your operating system, select the section pertaining to your install option.
For example, if you wish to install PHP on MS Windows and use it under Apache2, you would end up in the section Apache 2.0.x on Microsoft Windows. Incidentally, I dont advise using the installer with MS Windows - use the zip package instead (also found at php.net). You should already have Apache2 installed, but that can be done easily by using the Apache2 installer found at the Apache HTTP Server project.