I created a proactive campaign note-taking setup in Notion for our workshop members last year. I posted a link to the template for you to copy in a new course in the Classroom tab, plus two videos on how to use it.
I'll be using it myself in the next few weeks as I start my new campaign, so I'll be uploading new videos as I do that, to illustrate how it works in practice.
If you have questions, feel free to post them here or on the video itself.
Hope this helps!