I need some lessons!

Well hey fellas!
I know how to fly a plane and all but i would like to start getting more familiar with the planes.
I don't know how to work Trimming
I do not know how to use the FMC's
I do not know how to use all the Over Head Switches and their operations
I do not know some other things :(
I would really like to learn all this in a Boeing 747, Boeing 737 and Airbus A320.
If anyone could post pictures (or screenshots ;D) with overhead panels etc... with arrows pointing to each switch with what it does that would be much appreciated!
I know how to fly a plane and all but i would like to start getting more familiar with the planes.
I don't know how to work Trimming
I do not know how to use the FMC's
I do not know how to use all the Over Head Switches and their operations
I do not know some other things :(
I would really like to learn all this in a Boeing 747, Boeing 737 and Airbus A320.
If anyone could post pictures (or screenshots ;D) with overhead panels etc... with arrows pointing to each switch with what it does that would be much appreciated!