Now I'm learning the renormalization group by Peskin and Shroeder.
But yesterday an idea crossed my mind that it may not possiblly be the best book for learning the renormalization group.
Famous books which treat Renormalization Group are:

• "An Introduction To Quantum Field Theory" by Peskin and Shroeder
• "The Quantum Theory of Fields" by Weinberg
• "Quantum Field Theory" by Itzykson and Zuber
• "Gauge Theory of elementary particle physics" by Cheng and Li

I have all of these.
Which do you think is best for learning the renormalization group.
Thanks.

Currently I'm learning about the renormalization group by Peskin and Schroeder, but I don't find its explanation totally clear. I know that the renormalization group is treated in many quantum field theory textbooks, such as

• "An Introduction To Quantum Field Theory" by Peskin and Shroeder
• "The Quantum Theory of Fields" by Weinberg
• "Quantum Field Theory" by Itzykson and Zuber
• "Gauge Theory of elementary particle physics" by Cheng and Li

Where can I find a clear explanation of the renormalization group in quantum field theory?