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Own a Roku TV or streaming device? You're about to see a lot more ads on your home screen
(www.techradar.com)
This is a most excellent place for technology news and articles.
I block logs.roku.com and cloudservices.roku.com on my pihole without impacting any functionality.
Is there a good resource to learn how to install that kind of a system for a person who's tech knowledge ends at one semesters worth of C++?
A semester of programming is more than you need. The hardest part would be installing the OS on the raspberry pi. https://pi-hole.net/
Yes setting up a Pi-Hole should be pretty doable for someone like you. I can't recomend a specific tutorial off the top of my head, but there should be plenty to find.
You mainly need a pi running raspbian or a pc running some debian based distro.
Anyone can set them up, it’s just running an app
You can alternatively install Adguard too which will happily sit in a Docker container on a regular server if you're aware of how to do that.
what info is sent to these domain?
None if you block them.