hmm..I got a breadboard and jumper wire kit. I also want to build a simple circuit..how do u do that in the breadboard? how do you connect the power supply? is there a tutorial for this?
A power supply, is just a regulated voltage supply. Ie anything that gives out a fixed voltage. The most widely available ones are those power adapters often bundled with electronics devices.
For a start, find a 5V adapter, an LED and a 330ohm resistor. Wire it up and you have your first circuit, a lit-up LED.