You would probably get a better response if you were to post this in the New to Photography section instead of the D5000 and D3000 section, but I'll give your question a go.
Most of the information you're looking for is available in the D300 section here, but you have to be a paying member to have access to that section.
For more advanced information, you would probably have good luck with Darrell Young's book Mastering the Nikon D300. It's published by Nikonians Press which is a Rocky Nook imprint.
I like David Busch's D5000 book as it includes a lot of what you're looking for, but it does include the basics. He has a D300 book as well and if you can overlook the 2/3 of the book that's not the advanced parts, it would be worthwhile.