Lol, I knew I was being too vague.
I can read music extremely well, as I also play oboe and sing. However, I guess "accuracy" might be the best word to describe what I'm looking to improve. I can plunk my way through almost any piece, but the faster the piece and the more notes I have to hit, the more my accuracy suffers. This might have something to do with finger and wrist strength as well.
The existence of "finger strength" is a common misconception. These two resources might be of interest to you:
-as well as the rest of his site, which explains piano technique, as well as practice suggestions and things
2)www.pianopractice.org (a terrific free resource on almost everything piano-playing related, though it's not the be-all and end-all so read it with a grain of salt; would likely address a lot of possible questions)
Seconded. The correct way to phrase "finger and wrist strength" issues is "technique" issues. I guarantee if you can move your fingers and hold a pencil, they're strong enough. You're not moving a fifty-pound key. It only weighs a couple ounces. What you will likely need to improve on is technique. Use less strength and better technique, and you will arrive at the correct note more often.
Unfortunately, it is much more difficult to diagnose which technique issue is giving you trouble. I'm guessing there are some twisting and interdependence issues, and maybe some shaping issues (because it's a natural resultant issue of the first two), but that is pure speculation.
The first thing I would focus on is playing with complete freedom, ease, and facility. No stress. No tension. No locking of fingers, joints, wrists, arms, anything. No rushing to reach a note. No stretching to reach a chord/note. Whatever you can play completely freely and without reservation, hesitation, or pause. I don't care if it's a five-note scale or a Liszt etude; that's your starting point. Take it up a notch from there and work until you can get that feeling just as "free". Then, another notch, and another, until you reach your eventual goal.
And of course, feel free to ask any and all specific questions about how to accomplish this within a passage, piece, etc. There are tons of knowledgeable people who are willing to answer those questions. And I'd be happy to try as well.