Root domain and add-on domain

Hi there,

I am new.

I opened a new website with bluehost with a domain name. It's a piano site, so I named it:

LearnPianoWithRosa(dot)com

(I am not allowed to post link names because I am new so I need to put the (dot) there to replace . )

And then I saw how successful going online is and people actually bought my stuff, so I started investigating into other areas of internet and got involved with internet business sites.

So I bought a new domain name and called it:


SecretsToSuccessWithRosa(dot)com


I intend to use this new domain name to do with internet marketing.

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So I went into bluehost and "added-on' domain.

Then I discovered that it is really not a ROOT DOMAIN, although the 2nd site's name: SecretsToSuccessWithRosa(dot)com is a new site, but it is called an 'added-on' domain.

Then when I started setting up websites for this new domain name, it seems to function on its own like my first domain name, though it is 'added-on'.

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Then a week ago, I bought a package of niche-marketing software, and I saw this:

""But you should avoid this setting ('addon domain'), as search engines do not treat them as real domains."

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I was concerned cuz my new site is an add-on domain andnot a root domain.

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I wrote and asked the guy about this and the guy told me that 'that is outdated info.'.

I am a bit confused.

Since you guys are experts, can you tell me if my 'add-on' domain is alright with google or should I totally find a new hosting site and open all sites with root domains?

Thanks for your help,

Rosa