If you have a small screw driver, and a ceramic media stone you can easily perform a "basic" action job. W/o getting into too many details, the single biggest improvement you can make is by stoning the rebound slide and taking off the sharp corners on it. If I'm not mistaken, there should be a post on here somewhere with pictures and easy instructions to assist you. Dry firing is a great thing and it will help your finger muscles, however I prefer to do both. If I had some extra parts laying around I would take pics of them and make a diagram of what all needs to be slicked up and what you don't want to touch, its really not all that complicated nor intimidating once you start it.