Paint +++ is an inexpensive painting program for OS X that can be used to teach students the basics of painting software. Many sophisticated graphics software applications (such as Paint Shop Pro or Photoshop) use the same basic principles that can be learned using Paint +++.
Using any painting program involves learning how to use the menu bar and the tool bar. Paint +++ also includes a color palette that allows the user to choose both foreground and background colors with which to work.
Paint +++ can open and save to most major image formats, including BMP, PNG, JPEG, TIFF, and GIF. Full support for transparency is available for image formats that support an alpha channel (currently PNGs and GIFs). You can also paste images copied from many common Mac applications, including Microsoft Office and Apple iWork.