jamiemac2005

Q1, this is down to the server's setup, traditionally "index.html/php" is the page served. But it's changeable. So you'll have to have a look at your server's configuration.

Q2, this is again linked, no you don't have to upload a html file to serve in place of the PHP. You need to change your server's config so that it serves "home.php" in place of "index.html"... It's just one of those things that is a bit of an effort to configure but once it's done it's done. What server are you running?

Q3, It's probably because your file isn't saved, or is not up to date, and to preview it in the browser you must first save. Get into the habbit of pressing Ctrl+S before you click preview in browser =]

Cheers,
Jamey