[Kaperstone]

Learn it in that order
HTML > CSS > JS > PHP
this is basically
"Skeleton" > Style > Client backend > Server backend.


Experiment a lot, download nginx, just click the .exe file, it will show a window for a split second and turn off. (its ok)
Go to your browser, write 127.0.0.1, press enter.
If you see a page, then everything is working fine and you can start testing and experimenting with HTML, CSS and JS.

For PHP to work on Windows you'll need to download, put it at C:/php
open terminal (cmd.exe), write

Код:

C:
cd C:/php
php-cgi -b 127.0.0.1:9000

And you should be good to go with PHP.
As to learn PHP.
http://php.net/docs.php
is your best friend, all you need is <?php ?> tags and start to create stuff.
Whatever you wonder, search on the documentation.


EDIT: Forgot to say that in NGINX, the files where it loads the pages from is in "html" folder.