1. Download and unzip the WordPress package if you haven't already.
  2. Create a database for WordPress on your web server, as well as a MySQL user who has all privileges for accessing and modifying it.
  3. (Optional) Find and rename wp-config-sample.php to wp-config.php, then edit the file (see Editing wp-config.php) and add your database information.
  4. Upload the WordPress files to the desired location on your web server:
    • If you want to integrate WordPress into the root of your domain (e.g. http://example.com/), move or upload all contents of the unzipped WordPress directory (excluding the WordPress directory itself) into the root directory of your web server.
    • If you want to have your WordPress installation in its own subdirectory on your web site (e.g.http://example.com/blog/), create the blog directory on your server and upload the contents of the unzipped WordPress package to the directory via FTP.
    • Note: If your FTP client has an option to convert file names to lower case, make sure it's disabled.
  5. Run the WordPress installation script by accessing the URL in a web browser. This should be the URL where you uploaded the WordPress files.
    • If you installed WordPress in the root directory, you should visit: http://example.com/
    • If you installed WordPress in its own subdirectory called blog, for example, you should visit: http://example.com/blog/

That's it! WordPress should now be installed.

for more information , https://codex.wordpress.org/Installing_WordPress