Yes it is.
You can work NAP as a complete beginner, and you can also work Lon Milo DuQuette’s book Enochian Vision Magick as a beginner, as well. To my way of thinking, Lon’s book will probably work better for you than NAP, because the enochian elementals are very powerful.
The key is to read the entire thing and understand how to do the work in order.
The NAP book doesn’t properly explain how to set up the brain and heart Operant Fields, which is the main key to getting them working ritual magick properly. I explained Operant Fields here in general, and you can find out more about them from Scott here. Operant Fields are the key to doing ritual magick that actually works, so pay attention and modify your NAP until it incorporates these ideas.