Rediscovering the art of writing
What nib size do I want on my fountain pen?
   

For most people a medium nib is most suitable. If you have very small writing you may wish to try a fine or extra fine nib, though the finer the nib the scratchier the pen. If you have large writing or are using your pen for signatures then you might want a broader nib. If you want a pen for calligraphy that gives both a thick and a thin line and more definition in your writing then you need an italic nib.