John, as previously stated, let the saw do the cutting. You're there to simply guide the wood. As for your saw, the Porter Cable (PC) is considered by many to be the best entry level saw around. My previous saw was the PC, and I can attest to the fact that it's a very capable saw. However, the saw is really only as good as the blades your using. Get a sample pack from Mike and you'll notice a significant difference in how they handle. Other than that, it's all about technique, and that's something you'll have to learn by practicing. Sometimes if I'm between projects, I'll just pick up a scrap piece of wood and make several cuts on it, just to help keep the skills in tune.
Use every available source for information you can get your hands on. Sheila has great tutorials, as does Steve and others. Watch them and practice what they teach. The books are great too! I picked up a few at Barnes & Noble and studied them as well. They were good to have there at the saw so I could reference different techniques.
Mainly, once you've seen the techniques, practice, practice, practice. Unless you're one of those who can instantly pick things up by watching someone else do it, practicing is the only way to get good at it!
Good Luck!!!!
Glen