Friends are awesome, I mean real friends who actually know who you are when you bombard their Facebook inbox with random messages. One of my friends is classically trained [like her summer job is teaching violin to kiddos] and after my humble Google search's best result was Wikipedia I decided to see if she had better resource.
[The answer was yes, and it is awesome!]
I really don't know what to say about this website [linked above] but it's a wealth of information that in no way seems condescending. Sheet music has alot of small nuances which make a world of a difference, this site really spells it out.