Searching past presentations and newsblog posts

I get asked for this a lot.
How can i easily find a topic we've covered in a past presentation and/or newsblog post?
 I produce 2 presentations a month for both Windows SIG and Cyber Security SIG. That's a few hundred pages/posts to search through

 For the NEWSBLOG posts on the Cyber Security SIG site, the site has a Search box

The result will be every blog post with the keyword(s) entered in the Search box.
Once all the relevant articles are displayed, use the CTRL-F key to bring up another search box to find the keyword in each of the found blog posts.

Then use the Up and Down arrows to advance to the next instance of the keyword.

For searching the presentations a bit more effort will be needed.
If you have downloaded any or all presentations into a separate folder on your computer, the next step is not needed. If not you will need to do so or a similar task to allow your machine to search inside of the possible presentations.

Windows search needs to have capability to search inside of files enabled.
There are several ways to do this, you may have already.
Use the File Explorer icon or Folder Options

Now navigate to the folder where you have saved to potential presentation files, or all of the presentation files and type in your keyword(s) in the search box.
This will list all the files containing the keywords.

Now open the relevant PDF file and use the CTRL-F search box as above.