Here’s the quick version of the instructions, for wordpress installations.

1. Download and unzip the WordPress package, if you haven’t already.
2. Create a database, mySQL user for WordPress Blog on your web server. If you’re completely unaware about mySQL db and mySQL users please contact your web host to setup this for you.
3. In the installation package, rename the wp-config-sample.php file to wp-config.php.
4. Open wp-config.php in your favorite text editor and fill your database details.
5. Place the WordPress files in 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 (but excluding the 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/), rename the directory wordpress to the name you’d like the subdirectory to have and move or upload it to your web server. For example if you want the WordPress installation in a subdirectory called “blog”, you should rename the directory called “wordpress” to “blog” and upload it to the root directory of your web server.
     
6. Run the WordPress installation script by accessing wordpress-blog-root/wp-admin/install.php in your favorite web browser.
   • If you installed WordPress in the root directory, you should visit: http://example.com/wp-admin/install.php
   • If you installed WordPress in its own subdirectory called blog, for example, you should visit: http://example.com/blog/wp-admin/install.php

That’s it! WordPress should now be installed.