Underneath view of plane, showing blade. Unscrew the bronze woodscrew to remove blade for honing. Hone blade on top bevel ONLY; Try to hone the blade at the original honing angle, which is approximately 30 degrees. (The grinding angle at the tip should be approximately 25 degrees.)  After honing place the  blade with bottom held firmly flat down on a flat oilstone or waterstone and rub gently to remove any burr left from honing. Never lift the blade when doing this!

The best stones for sharpening are either natural Arkansas oilstones (hard) or Japanese water-stones. The latter are available from Lee Valley Tools (Canada), and both types are available from Garrett Wade in the USA. 

Contact me if you have any questions about blade alignment and sharpening.