Which is a part of its versatility. Use whatever is comfortable for you - change it up over time if it is not working. GTD does not require one tool but each component can be broken down into its essential elements to make it work for you.
Setting up Microsoft Products for GTD
If you have a Bullet Journal / Moleskine / Franklin or other paper-based (or on the computer) system simply create the following tabs (depending on your own style - what is the order of it is not that important). The point is - doing things IN CONTEXT:
: @Calls - where you write down calls you need to make
: @Computer - things you need to do when you are at your computer
: @Office - things you need to do when you are in your office
: @Home - things you need to do when you are at home
: Read/Review - things you want to read
: @Projects (work)
: @Projects (home)
: One-on-Ones - want to remember what to talk about when you meet with your one-on-one? This is an excellent method.
: Waiting For - used when you are waiting on someone else to deliver something so you can move forward with your work
: Someday/Maybe - a list for those things you want to do at some point but not sure when
: @Agendas
: @Errands
: Calendar
Create the following tabs in your favorite NoteBook - or manage these documents on your computer - whatever works for you
: 20,000 feet: Areas of responsibility.
: 30,000 feet: 1-2 year goals.
: 40,000 feet: 3-5 year vision.
: 50,000+ feet: Life