phpBB is a webforum.... it creates forums kind of like techimo. It's stands for (php Bulletin Board) ..... it uses PHP to run the board.
PHP stands for (PHP Hypertext Preprocessor). It's is a server-side embedded scripting language. (IE you need a WEBSERVER to run it)
php is similar to asp, coldfusion, and perl ........ it's open source and works great to access databases. PHP was designed to work on the web, unlike perl and python, which will work on the web, but were not originally DESIGNED for the web.
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So back to my first question .... only elaborated a little more........
Are you wanting to install and run a forum like techimo on the web, or are you wanting to learn how to script php ........... (kind of like learning html) ????