No specific model of scanner or specific scanning software is indicated. These are intended to be general instructions, adaptable to most combinations of hardware and software. Please use the user's manual of the specific equipment you are using to locate the kinds of controls mentioned here. Make sure you orient your original on the glass properly. Scanners differ about placement, but usually have some indicator in the corner where you need to position the original.
Some scanners offer other choices, such as scanning directly as a half-tone.
This shortens the whole process if you don't do a color prescan. For printing, you will want to scan with a higher dpi, but remember that the file will be significantly larger. Most programs will give you an indication of the size of the resulting file before you actually make the scan. The program may give you the dimensions of the resulting scan, which is helpful if you are trying to create something to fit a specific size. Select the area you want to actually scan on the prescan image.