https://chrome.google.com/webstore/detail/scriptsafe/oiigbmnaadbkfbmpbfijlflahbdbdgdf

https://addons.mozilla.org/en-US/firefox/addon/noscript/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search

These are the ones I use for their respective browsers. It is a bit of a pain the first time you go to a website, but you can get a LOT of insight into how "business" works online. Take some time and research what the various script origins are actually doing. It has been quite illuminating over the years to see what all of the scripts are doing. Secret redirects hiding in ads, background control scripts, data harvesting, etc. I have never seen a tutorial on it per se, but from my experience, things with "cdn" are usually hosting the media for the site as long as the domain is the same (sometimes not if they are pulling images from another source), anything with the word "ad" in it gets auto banned by me, and try to turn on as few things as possible to make the page work. I even somehow managed to block the in-video ads on Crunchyroll for a time. Don't ask me how, I have never been able to get the event replicated on a friend's machine.

Hope this helps.