On this site you will find information about downloading and installing the Visual Studio software which you can use to create Windows Forms Applications using Visual Basic.
In the menu on the side, in addition to the download instructions, you will find links to tutorials you can follow to create various applications. The aim is to help you learn all the skills you need to be successful at GCSE level and then build on that at A level.
Once you have installed Visual Studio, start with the Beginners tutorials, follow the video guides to create your own copy of the application and then see if you can develop the application further using your own ideas.
Good Luck.