:welcome: to the Forum. I really don't have tips for battery saving, I think most of them aren't very helpful. My tip would be purchase a spare battery and see if you can find a wall charger. I don't know what battery the Inc uses but Amazon might be helpful.
I like to enjoy the features of the phone and not turn everything off.
See I have a Motorola Droid and even though they are both Android there is some differences. I don't have a Mobile app.
I can suggest some apps for you however. Screebl, it comes with a video and will explain it for you, if you don't have a file manager get either Linda or Astro. That's helpful in installing apps, finding location of different files. Ringdroid so you can make your own notifications with your mp3 files. I love Beautiful Widgets but I'm not sure how that will work on the Inc.
We have a sister forum HTC Incredible Forum. I'm not trying to get rid of you, we have a good Incredible section here just giving you alternatives.