Basically enter 'localhost' on my small browser, I am come to XAMPP's welcome screen so things are installed properly.

What folder must i put my html files in? alt text

Thanks.

It ought to be under XAMPP->htdocs.

My prediction is increase one folder and when the thing is something like public_html, htdocs, or www, it will visit.

Normally, these preinstallers reconfigure apache to some htdocs(or webdir, public_html, www) folder, directly within the xampp folder. Look under C:\XAMPP\xampp inside your situation