Welcome to Fritzing! The first thing to do when you need a part is a google search of the form “fritzing part BOURNS 3266W” which in this case turns up
which is much easier than making a new part. If this part doesn’t suit, post the changes you need and I can make them to that part. In the case where there isn’t a part and you do need to make one here are some tutorials which apply to the current version of Fritzing (many of the tutorials out there are for older version of Fritzing and no longer apply):
parts making is currently poorly documented and quite complex (it took me around a year with constant help from folks in the forum to learn to make parts) so the usual method is try, then post your questions in here and one of us will help you out.