This post refers to Bluehost hosting, although the process is likely similar for other hosting companies. Bluehost does offer easy WordPress install, but so do many hosting companies.
Log onto Bluehost
Click on ‘WordPress tools’
Click ‘new install’
Choose where you will be installing WordPress. In this case, we’ll be installing on a sub-domain you have created. Scroll down to the bottom of the drop-down and find the sub-domain where you’d like to install WordPress.
You will get this message: “You can get a free SSL certificate to improve the security of this new site, but your free certificate will only work if you select an addon domain.”
Leave the Path name blank.
Add a title. This sub-domain will act as an independent website. It is not a page or a post on your site.
Fill in the Admin username, password, and email. Again, this sub-domain will be acting as an independent site.
Then log in to WordPress. This will be at yoursubdomainname.yoursitename.com/wp-admin.