I am about to change my rear brake pads. Can anyone give me any pointers this will be my first time.

 

Get the $10 tool for screwing in the calipers (it looks like a metal cube).
Don't try doing it with a pair of needle nose pliers unless you are an extremely masochistic individual.

 

removing the calipers can be fun...clean carefully, use pliers to remove the ebrake spring for the time being, have a wood block and hammer or mallet for commonly stuck rotors, and a pair of needle nose pliers or teh caliper tol and a socket to twist the piston back into the housing,,,don't use a C-clamp.

good luck