Just scroll down a bit and make sure you have "Resources and Information" expanded. That's where you'll find file size info and links to all templates (free to download) for every product.

You'll want to download either:

Mac file ps_pe036-victoria3T.sit (1.77 Mb)
Win file ps_pe036-victoria3T.exe (2.17 Mb)

(live links removed for this post)

have fun