Terms nodes ,loop and branches which applied to the circuits

[momomo_mo]

HI everyone
I am confused by the terms nodes ,loop and branches which applied to the circuit.

 

[Loren Booda]

A Google search with the terms "nodes loops branches 'Kirchhoff's laws'" came up with (among others) the sites
http://fourier.eng.hmc.edu/e84/lectures/ch1/node6.html and http://theory.uwinnipeg.ca/physics/curr/node8.html