Although I'm a relatively low-time pilot, I have been flying for over 50 years and a CFI for over 30. Each time I read from Airplane Flying Handbook, I either learn something new, reinforce what I already know and teach, or gain new insight into some aspect of flying.
I suspect the same would be the case for you.
If you are a pilot and have an iPhone, iPod touch, or iPad, there is NO reason not to have this app! You can have "the book" with you at all times with no inconvenience---because it is tucked away in your iPod/Phone/Pad!
You'll be amazed at how often you can read five or ten minutes while waiting for the barber, your spouse, or the kids.