179253 Password Protected Section

I am looking to add a password protected section to my Taekwondo School's website. Since we have PHP and MySQL already included, those should work fine for our purposes. Inside the section would be a page with information on each student (Things such as name, rank, number, classes attended, history, etc.). Optional features would include links to download their required material that appear based on their rank, ability to register for testings with the click of a button (Clicking would put their information into a testing registration form), ability to pay for testings (As well as school merchandise) on the site via Credit Card or PayPal. Again, optional features are not required, but if you are able to add any or all of them, more power to you!