"I have a little laboratory at home and I intend to do a lot of experiments, the problem is that I tried the first experiment (OHM´s Law) I found out that the Carbon film fixed resistor don´t appear to consume current.
I applied 12 volts from the DC power supply, but the voltmeter was reading about 11,9volts, but the Ammeter was reading zero, I repeated with1k and 10k resistance but nothing changed. I am a bit desillusioned and i need help."
I really want to verify the functions of the resistors in electronics circuits.

 

Did you properly connect ammeter to the circuit?
And for 1K an 10K resistor current should be 12mA=0.012A and 1.2mA = 0.0012A.
So can your ammeter measure such small currents?
http://www.allaboutcircuits.com/vol_6/chpt_2/4.html

 

... also, some ammeters have fuses ... worth checking.

 

Did you remember to open the circuit path and arrange for the ammeter to be part of the current path? You measure voltage in parallel with a resistor. You measure current in series with it.