Well... first of all, you'll need an web host. You could Google it for free ones. Then, you should be provided an FTP server, FTP username, and FTP password (usually the password you used for registering). Try using
this link.
Step zwei (haha

) is getting yourself an FTP client, like...
Cyberduck or
CuteFTP (this one is not free).
When you're done with the above steps, you need your forum software. I've used
phpBB for its community support. Download the package and unzip it somewhere.
Next, fire up your FTP client, and log into the server, with the information provided at step 1. Each of the two clients I indicated at step 2 will have two places once you logged in: your computer and your space on the hosting service. On your computer, go to the folder where you unzipped the forum software. You might want to rename the unzipped folder to phpbb. Then, drag it into the other space, the one with your host's files.
After everything is completed, you need
a database. I recommend a MySQL one. Google search for
free mysql database, and register to
d b 4 f r e e.
When everything is complete, you can go
here for an installation guide. Come back here if any problems arise.
P.S.: Why is it censored? It censored
four fr33 (the correct version, I mean

)