I could tell you and show you exactly how to start your own bullet journal, how to set it up, personalize it, ad find what works for you. And I will do that, but fist, I want you to see something.
Carrie Crista has a two-part series on YouTube about starting a ullet journal. She describes how to get started here. The second video talks about how to use collections, trackers, etc.
Regardless of if you follow her approach or the system described in the original bullet journal video by Ryder Carroll, you need to make it work for you. If that means you have a separate journal for work projects, so be it.
In a future post, I will talk specifically about what I have done and why. Meanwhile, set it up, learn what it is, and make it work for you.