I see a book on Amazon called Nokia Smartphone Hacks, author Michael Juan. It was published in 2005, and I can't determine if it has been updated since. Is this a good book for the N75?
Nokia Smartphone Hacks Book
I see this thread has had a few views since I posted it, but no reply yet. I am guesing no one has read or seen it. I am going to take a chance and order it.
I don't think it has been updated. It also has a bunch of non-smartphone things for Nokia's S40 phones.
You probably get the same info from the User Guide + http://www.allaboutsymbian.com/support/ and http://www.s60tips.com/