I was looking to find if there's a search function usually seen in forums, but I can't locate it. I wanted to do a search in the Code Discussion, for any signs of updates to older archived videos.

Like the title, how do I do a simple search?

You can search here: https://forums.handmadehero.org/index.php/forum/search
Unfortunately link to that address isn't put anywhere.

That link should be put somewhere in the sidebar for better clarity. I wondered if this is possible.

Or if you want to wield google's search power, this is a query that will limit results to this forum only:

site:https://forums.handmadehero.org how do you