How do you put websites in alphabetical order on pages for iPad?

Assuming you mean the Pages app, the only way to sort text is if it is in a table.

You will find some instructions for using Pages here: http://www.apple.com/support/ios/pages/

But essentiall, you will need to create a table, place each URL in its own row, Tap the header to select the column, and select Sort (ascending).