I generally tune to field points in the spring, getting ready for tournament season. Usually retune around June to fix any creep in the string/cabling system. After tournament season, I retune with broadheads to get ready for hunting season. Any time the bow isn't shooting the way it should, I check the tune and fix it if necessary.

The problem with taking your bow to the shop and having them tune it is the bow will be tuned for someone else, not for you. You won't likely grip the bow the same as the tech does. The bow needs to be tuned to your unique shooting style to be truly tuned and the only one that can possibly do it right is YOU. Some shops will work with you and do the adjustments while you do the shooting, but shops like that are few and far between. So, anyone that shoots a bow needs to know how to tune and maintain it themselves.

Tuning can be an aggravating, frustrating trial, but it gets easier with experience. The Easton guide tells you all the basics you need to get started.