What you are talking about is not all that hard, and is easily accomplished in about a day (or less).
Once you have the syntax down, it's really very easy.
I would start here at W3Schools(dot)com <-still under 5 post limit.
and pay particular attention to $_POST, Forms, and MYSQL Select.
Of course, you can change those variables with $_POST from your form. I really see no need for a class (OOP) here, although I do confess of being to lazy to use much. A couple of good functions to pull the data, and a display page is all you should need.