All files and folders should go under the public_html or www directory. The www directory is simply a symbolic link to the public_html folder. Please do not delete these folders.

Create an index file for your first page. You can name it index.htm, index.html, index.php, etc. The system looks for those exact names by default (remember to use a small "i" as the file names are case sensitive). It must be placed directly under public_html and not a subfolder. Once you have done this, go to http://www.yourdomain.com and this file will then automatically open. Without it, your file structure will show instead. You'll see a header like "Index of /".

For subdomains and other folders, when going to the folders at http://subdomain.yourdomain.com/ or http://www.yourdomain.com/subdomain-folder/ an index file in them will operate the same way and automatically open.