If you are looking at this (which I guess you are), the install of ForkBB appears to have worked! Now log in and head over to the administration control panel to configure your forum.
Added later 01 min 17 s:
https://www.youtube.com/watch?v=VsEcwhTShOQ
Added later 24 min 14 s:
Student Days
https://www.youtube.com/watch?v=3UdyiZ_uZnA