So, create a unique Login ID for this individual account. Make sure that your login info for the Add on domain is NOT the same as your master FTP account.
Ad Inserter (by Igor Funa) -- works in tandem with Advertising Manager below. Will make your life easier when you monetize your site with ads. The last thing I want to do is figure out how to code the ads in a way to make them repeat or sit in a certain area on my site. This plugin makes adding ads simple.
Create your password. Click on the link to open the password page. Enter your desired password and make sure you meet the criteria written in red. Retype the password and click "Change Password" button.
Let's talk about what you get with their service. Bluehost runs under linux hosting and uses cPanel hosting, which is the best control panel and usually the industry standard provided by hosting companies. Their service comes with many tools to help webmasters such as the site builder web designer, the get more info ability to back up your cPanel (in case anything goes wrong). They also support PHP 5, SSH, SSI, Cron jobs, Curl, Python, Ruby On Rails, Front Page and more. If you don't know what these are, you can read through their features page for a quick explanation.
I've done some stupid technical stuff with my websites as I've learned to build websites. One day I absent-mindedly re-installed WordPress on an established website with a lot of content. When you re-install WordPress over a site, you lose the entire site. That's what happened to me. Months of effort vanished in seconds.
It's that easy and once you've done it once, you can do it again without a problem. Remember now that you have your space, you can continue to add domains to your web host by adding subdomains. There is no limit to the amount of domains you can add. So go ahead and build your blog empire. I am and I'm going to do it on my Bluehost account.