Is your question in the context of the responses that you collect (this is the View Responses tab) or the actual form that your end users will see?
In a nutshell, (1) a field in your form corresponds to a column in the responses table. (2) the caption text of the form field will be the column header (show up at the top of the column). (3) to list names in alphabetical in your form, you can use choices fields, like multiple choices field or drop down field - you will have to enter the name in alphabetical order manually.
Hope this helps,