How to trace a sender's information in Gmail?

Now a days email spoofing has been a very common act, there are tons of softwares which can be used for email spoofing. Alot of scammers use mail bombing along with email spoofing, As you know that this blog is for beginners so i will first explain what is mail bombing? and what is email spoofing? and then will explain you How to trace a sender in Gmail!What is Email Spoofing?Email spoofing is an