ok, time to start over. using your ftp, remove/delete everything that you did so far.
now, follow these instructions exactly and in order:
1. when you download this:
It is a zip file. in order to use it, you have to unzip it onto your computer.
I don't believe that MACs do this automatically for you when you download a zip file but I could be wrong about that.
now, once it is unzipped, you will have one folder , not a file, a folder, named phpBB3
Inside that folder named phpBB3 are many other folders and files, one of those files is named config.php and it is blank. ( don't worry about it being blank, it will be filled in during the install process )
2. ok, now you have the phpBB3 folder on your computer,
using your ftp program, access your server root ( that is usually called public_html or www or htdocs on the server.
upload the complete folder named phpBB3 to that directory on your server. this is the same place that any and all website files would go on your server.
don't create a new folder to put it in or anything, just upload the folder named phpBB3
once it is done properly, you should be able to go to http://yourdomain.com/phpBB3
and you would see the install screen for the board.
3. now, you have to create a database for phpbb to use.
go to your hosting control panel, find the database area and create a new database. when you have done that you will have the database server name, the database name and the database password.
you will need that in the next step.
4. go to your board in your browser: http://yourdomain.com/phpBB3
you will see the install page. click the install button.
keep clicking buttons and filling in blanks until you get a message that says you are successful.
5. once you are at that point, you will need to go back to the ftp, find the phpBB3 folder, open it, and find the folder named "install" . then delete that folder named "install"
you are done, you have a brand new phpbb board.
oh, by the way, there is no metaphoric language used in any of the instructions.
there are some technical terms that you may not understand but it is not metaphoric.