When you've opened your image go to Enhance>Convert to Black and White. A new window will open showing you the image how it is now and how it will look once the conversion has been applied. There are several pre-set styles to try and choose from. You can also adjust the intensity of these pre-sets with the red, blue, green and contrast sliders. If you alter it too much simply click undo. When you're happy click OK and your image will now have a mono tone.
You've read the article, now go take some fantastic images. You can then upload the pictures, plus any advice and suggestions you have into the dedicated Photo Month forum for everyone at ePHOTOzine to enjoy.