Deny yourself (or have someone deny you) for 24hrs to start. You may find it difficult at first to not cum, but this will fade as you practice and notice the benefits of edging. I recommend giving control of your orgasms to someone else, it's harder to relapse into selfish ways when you're serving another person.

Some girls edge because they cum so much harder when they're allowed to, some do it because they enjoy serving others and love the denial. Others goon because they're dirty little sluts that love to be permanently wet and aroused. You'll find your own motivation to guide you.

The most important thing to remember is that edging will only bring you happiness, just ask one of the numerous sluts who can't keep their hands out of their pants.