This article is from the Bagpipe FAQ, by Denise McNickle email@example.com with numerous contributions by others.
As with any instrument, a good teacher is invaluable. You may also wish
to consider one of the tutorials listed in "The Printed Word", below. Also,
you'd be well-advised to find one or more good books or pamphlets on
reedmaking. Uilleann pipers should learn to make reeds early and often.
Uilleann pipe reeds seem to be significantly less "interchangeable" than
Highland pipe reeds. In other words, a chanter reed that works well in one UP
chanter may not work well at all in yours. Unless you know of a good reedmaker
in your area, you're going to be making and/or tweaking your own reeds.