i am having a big issue in deciding whether to read zee's qft in a nutshell book. peskin and schroeder's intro to qft, or ryder's qft book. I have heard the first chapter of zee's qft book is great but the other chapters get progressively worse because they are a general outline of the applications of qft. i am looking for a book out of these choices that is easy to understand and has good exercises to do. thanks.