To carry or transport. It is the poet explaining the different types of places the brook passes through or goes past. The brook transports, though not literally, its banks past fields etc.
This line describes how the brook creates shallow bends and curves along its banks as it flows, implying a winding and meandering path. It suggests a sense of playfulness and liveliness as the brook moves through its course.
you slide from the fifth fret to the seventh fret
Curves usually mean fat, but can just mean someone who isn't stick thin too. The "curves", butt and breasts have some fat on them, but most men prefer curves.
Curves are designed with a bank in them. In other words the curves are not flat. They have a certain degree of angle designed into the road. 2-5 degrees is not uncommon. This allows you to traverse that curve at a higher rate of speed than if it were flat.
Not to worry
A cube has 12 edges. I don't know what you mean by "curves edges".
Open string
A capo is a device which is clamped onto the fretboard and is used to hold all strings on a chosen fret, just as if you had your finger barred across on that fret. With that in mind, presumably "capo 2" would mean that you are being instructed to install the capo onto the 2nd fret. or in short....... you have to clip a capo on the second fret
That means put your hand on the 7th fret, and "hammer on" the 9th fret of the same string, basically put your pointer finger on the 7th fret, strum the string, then use your next finger and put it on the 9th fret without strumming
see link below
It means a capo on the 7th Fret of a guitar neck.
To "bar" a fret on a guitar means to press down on multiple strings with one finger across the fretboard to play a chord or a series of notes.