TCP/IP GUIDE

I recently read again TCP/IP Guide  wtf !!
This book is very important for me .
Because I spend much time to end reading but It's too diffucult  to read
To be specific I learned the Data Communication and Communications as major
But the major class thought about information based on hardward.
Thus . I want to learn the logical Tcp/IP algorithms through this book.
This book is great to understand Tcp/IP But contains much various contents

SoSo , I am reading this book with good mind
Maybe I will read all of this book until next Month