How do I go about creating my own website?

[Pavel]

Well... no, you don´t have to be 18. There is more ways how to make a website. Since you are doing it mainly for fun (if i understand it well) I doubt you will hire an expensive proffesional.

So... you cam use any free website builder. It doesn´t matter how skillful you are, you will be able to control them. There is plenty of them, for your purposes I would recommend you Wix or Webnode. Personally, I am using Webnode.