Here is a basic coldfusion file...

Figure 1. Form.html
<form method = "post" action = "name.cfm">
<input type = "text" size = "20" name = "mynamehere">
<input type = "submit" value = "Submit">
</form>

Figure 2. Name.cfm
<CFOUTPUT>
Hello, #mynamehere#, Welcome to my website!
</CFOUTPUT>

Let us examine this file. Name.cfm is a file that has coldfusion extension. <CFOUTPUT> tag tells CF interpreter that you are going to display a variable. Variables in CF file are enclosed with #. 

This file will display the name you've entered in the form in "mynamehere" text field.

ENJOY ColdFusion Programming !!!