Ms Paint Tutorials
Ms Paint is a very simple program, which allows you to create or edit images.
On this webpage you'll learn how to do everything using only MS Paint. It has it's limitations though, and I would recommend using other programs, such as the free GIMP, or if you want to make or edit more professional images, I would suggest buying a more professional program, such as Adobe Photoshop.
If you are creating websites in HTML, you should remember, that images saved with MS Paint have capitalised extensions, .JPG instead of .jpg etc. Renaming these images to lower-case can help solve most image-related problems on your website.
Just add .jpg to the file name while saving and your image will have the .jpg extension in lower case.