When you first see GIMP's interface, you may think it looks very strange because it consists of several windows and makes use of right click menus to access much of GIMP's power.
The GIMP interface has two main windows — the Toolbox and the Image Window as well as a myriad of other windows such as the Color Palette, the Layers Dialog, etc.
Probably the window that is most central to the use of GIMP is the ToolBox.
The toolbox consists of the menu bar with the entries File, Xtns and Help, the tools buttons which are the set of square buttons in Figure 2-1, the color selector which is at the bottom left, and the tools status indicators which are at the bottom right.
Almost all the tools in the toolbox have options which you can configure to define how the tool operates. You can access the options either by double clicking on the tool's icon, or by clicking Tool Options on the submenu Dialogs of the File menu.
The other window which you will need to use all the time is the Image Window. This is where your drawing space is, and it also contains several additional features and the menu from which most of GIMP's functions can be accessed.