Nowadays computers come in all sorts of different shapes and sizes. There is the computer that sits on your desk at home or at school. There is the tablet or laptop computer, smaller than a desktop, which you can easily carry around with you. There is the smartphone, even smaller, which has a computer chip inside it that is much more powerful than the gigantic computers used to send a man to the moon in 1969. And there are thousands of other products which are controlled by a computer chip. All of the computer chips inside all of these products have been told what to do by computer “coders”, who are also known as computer “programmers”. These coders know how to tell a computer what to do, and they tell them in a computer language which has been specially designed so that a computer can understand it.
Here you are going to learn how to code in a language called BASIC, which was designed to be easy to learn and easy to use. You should go through the first 10 lessons at your own pace, and in each of those lessons you will learn five BASIC codewords. Each lesson is followed by an example program in which you can see how you can use each of the five codewords you have just learned in that lesson. The computer shows you how to write each of these example programs. And the computer also shows you, step by step, what every BASIC codeword in a program actually achieves – what it tells the computer to do.