Point your browser to mw config index php in your extracted MediaWiki files, which opens the setup screen. For example:
: example c.. mw config index php
How do I point my browser?
Thank you in advance.
Topic on Manual talk:Installing MediaWiki
Open your browser. Focus the address bar. Type your domain or IP, followed by the path where MediaWiki is installed (a "/" if it's on the root), followed by "mw-config/index.php". Hit the enter key or the button to navigate to the entered URL