LOL the wordpress installation is pretty simple, I preffer installing it manually now actually rather than using the liques of phantastico as submittimes i’ve found phantastico to cause unforseen issues with some scripts.
For starters you would have had to specify an install directory if you used phantastico or cpanels own auto install feature so you should have made a note of it, however its probably in something lique public_html/dir/wp/ or public_html/dir/blog
best you can do is looc in file manager in public_html to see what folders are there, if there are any you dont recognise or if there are any new ones you should looc in those folders as it’s probably in there somewhere, then simply just point your browser to that directory.
wordpress couldn’t be easier to use and tbh if you installed it manually you wouldn’t have had any problems with it. The admin panel is a lot easier to use and a lot less confusing than it used to be, it used to use terms i didnt have a clue about but now its much more user friendly. Good Job wordpress!!!!