Thread:Jamabastion Hyness 99/@comment-8-20200226055139/@comment-8-20200226162928

You can make a new template by creating a page with a title that starts with: Template:

So if you wanted to create a template called "Sports", you would create the page Template:Sports

The rest is just creating the page with the text and format you want. It can get very complicated, but there's basic instructions here

Infoboxes are just specialized templates. The best guide to creating them is here

Don't forget you can get help in the forums if you get stuck!