Can anyone teach few basic terms before filling up any form?

Question

Im frm india.Whatever the form may be, we come across First Name,Sur name,Last Name,Middle name.My name is harikrishnan Elangovan.

How do you fix my name in thse four terms.I need clear and simple description of it.

Answer 1

First Name:  Harikrishnan

Middle name:  --leave blank---

Last Name: Elangovan

Sur Name:  ---leave blank---