correcting pathway?

Sorry if this is in wrong area, but since it deals with WordPress, I thought I would put it here.

I am creating a wordpress site on a domain name of course, and being a newbie I think I set it up wrong.
I have thedomainname.com and it appears that the homepage is my blog.
I probably should have set it up thedomainname.com/projectname.

Is that correct, or should I leave this one page website at domain name only.

If I should put at thedomainname.com/projectname, how should I do so?
Also wish to know so after I am done I can sell the services to others.

Thank you for your help.

It is ok to leave your one page site on that
basic address if you plan to use it just for
that project. In case you plan to have more
projects on that same domain you could use
main domain as indexing page for all your
projects and move different projects to
/projecthame directory, or even create subdomains
for each of your projects.

You just have to create new folder with desired
name in your root hosting folder and place page
files there in order to get /projectname page. And
to redirect visitors in your main index.php/html page
to that subfolder page. So when visitors come to
your main domain addres from link or type it in
browser directly they wil be auto redirected to your
/projectname page.

Thank you. I have not idea how to do that so will have to google it and youtube it. But at least I know what I need to research instead of stumbling around in the dark. Thanks.

Use some blogging platform like wordpress
or blogger, or any other site platform. It will
do those thinghs automaticaly for you so you
dont have to solve same problems again and
you may concentrate on content.

When installing platform to test it, you can
install it on /projectname1 folder in your root
folder so project address would be

thedomainname.com/projectname1

And whenever you load that address it will open
your installed platform homepage.You can install
multiple platforms on different /projectname folders,
so each platform would have its own folder and address
like so:

thedomainname.com/projectname1
thedomainname.com/projectname2
thedomainname.com/projectname3
...

Than you can choose one that suits you best and
redirect your domain name page to show that page
as starting/landing page.