You don't even have to have a computer in the pharmacy. All orders can be automatically sent to your pharmacy via your fax machine. If desired, you can widen your customer base by offering online prescriptions and OTC products delivered via mail order within your state. This will demonstrate how you can also have LIVE classrooms on the web. Also, I invite you to imagine interactive exams that will grade themselves and show a student how to answer a question correctly next time if the student answered a test question incorrectly.
Students can also learn from interactive online tutorials.
An e-commerce website can take orders while you sleep. Websites that sell just a few goods or services can use just a simple javascript ordering form. A web site that has a large inventory can benefit from a design that utilizes a shopping cart program. However, I can program in javascript and perl as well. Being proficient in all three of these methods of website design allows me to have the ability to program anything you desire.