the first place to start with recordsets is in the Dreamweaver help documentation:
this will get you familiar with the idea of creating recordsets in Dreamweaver using Both Simple and Advanced View.
Form there, you would probably want to learn a little about the SQL language used for querying the data in your database, this is the language that is used in the recordset:
there are a number of books available at the Local bookstore to help you become familiar with creating dynamic database driven websites.
the David Power "PHP development with Dreamweaver" is a good one to start with