I have been trying to find a book I read quite a few years ago. Well, there are 2, one being the sequel.
Now I'm sure my memory has been kind enough to mix parts of the 2 books, but I will do my best with the description.
The cover of the book had a hand print. As far as the story, a boy finds out he has some powers from some guy. I think he had a ring that allowed him to use his power. Later when training the boy, he has him learn to control his power by deflecting rocks or meteors or some rocky item. The boy ends up using too much force and shatters them, but eventually gets the hang of it. Another part close to the end, the boy has a vision, I think, of some other kid getting struck by lightning, so he figures out a way to save the kid, but gets struck by the lightning himself.
In the second book, I remember a part early on where a sign falls from a building toward some child, but the boy uses his power to save the kid; afterwards, no trace of the boy is found. A lady who witnessed it said something like it was her dead son (I'm guessing his mom from the previous book).
I'm having trouble remembering anything but that. I read them in '97 or '98, I believe. As far as the publication dates, I never checked.