title: How to make a sub string selection and concatenation in excel?
body: <p>I have an excel file with field1 and field2<br />
  I want to take the first letter in field1 and concatenate it to field2 and put the result in field3<br />
  Example:
  Field1 = "John"<br />
  Field2 = "Doe"<br /></p>
  
  <p>I want to set the field three by some equation to be <br />
  Field3 = "JDoe"</p>