It is possible to learn the system in a month. Learning the system can be done in less than a week. For some a few days.
However, you should revisit the material several times. You will learn more and more everything through it.
Within the system you will be instructed to develop an beginners mindset. This by itself may be hard for many, and others will dismiss it and say to themselves "of course I'm a beginner".
The point I started to make was than many of the ideas are very simple. Take them at face value, don't discard them, don't try and read anything into them that isn't given. Both attitudes will just slow down your progress.
As for what material you what to learn, pick something new and interesting... but not overly technical. It has to do with the information density and the mixing the learning of two things at once. I personally, picked some self development, history, and biographies. All are readily understandable to everyone, factual, and of interest to me.
You are perfection.
Iam2
P.S. Don't learn the system, or use the system with a schedule in mind. You'll just impose mental obstacles. If you want to learn it quickly, then spend time with it. Do you spend 40 hours with it in a month, a week or two days. I don't recommend two days.