Manual DSLR Users...

[FG167]

...help please? How did you start? I loved my preset settings on my D5000 (like the "sport" mode was my fave), but since I have bought a D7000, I am not as pleased with my pictures. I think this is because the settings aren't suiting what I like anymore I don't know how to even begin shooting manual. I did bring my manual for my camera - is this sufficient to start with or is there a book or a certain something I should work on (like a certain lighting situation etc). My photography friends are in MI, I don't have any friends in TN so no one to hands-on show me what to do...