Your own page for what exactly?
More information would be helpfull.
However, I'll assume you mean your own web page in which case start here: http://www.w3schools.com/
and click the link near the top left that reads 'Learn HTML'.
If you mean adding your own page to phpBB then you may find this: viewtopic.php?t=16188
If you mean something else then, as previously stated, more information on exactly what you mean would be extremely helpfull as we're not all mind readers.