Pot is short for potentiometer which is a variable resistor. The 5K is the maximum resistance. Pots have 3 legs and will have a knob or screw that lets you change the resistance.
An analog meter could be a couple things but most likely its an electromechanical indicator - a needle with an electromagnet that moves the needle based on voltage
You might want to start with something a little easier than a lie detector. Try building a couple op-amp amplifier circuits first - these will be easier to test and less frustrating.
Pot is short for potentiometer which is a variable resistor. The 5K is the maximum resistance. Pots have 3 legs and will have a knob or screw that lets you change the resistance.
An analog meter could be a couple things but most likely its an electromechanical indicator - a needle with an electromagnet that moves the needle based on voltage
You might want to start with something a little easier than a lie detector. Try building a couple op-amp amplifier circuits first - these will be easier to test and less frustrating.
If you do a google search for op-amp circuits you should get tons of hits.
Opamps are an easy component to use to amplify signals. There are tons of ways to use opamps: filters, voltage to current converters, Waveform generation, etc.
You should try a simple inverting amplifier and non-inverting amplifier to start.