I am a noob and I have a question.
If I purchase a general domain name, for instance www.alittlebitabouteverything.com, can I use anything I want as a subdomain and achieve 1st page rankings on Google for each subdomain name, assuming I'm capable of promoting my subdomain well enough? Such as computers.alittlebitabouteverything.com, dogs.alittlebitabouteverything.com, astronomy.alittlebitabouteverything.com, etc. Or, does Google quit recognizing the different subdomains because they are totally unrelated to one another?
I'm asking because of the cost savings of having one domain vs. registering multiple domain names.
Thanks for your help,