Step 3 has a few more things to check and enter:

1. Your domain name
2. The path to your domain on your server. You usually don't need to change this, it should be correct if you've gotten this far
3. Your email - this is the email your Joomla software uses to contact you (for example, to tell you when someone has entered a new article on your site), and won't be displayed on your site.
4. Password - you can change this to whatever you want, but be sure to remember it.

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