Insert Red wire of the battery cap ( connected to positive end of the battery ) to the Input pin of voltage regulator and black wire of the battery cap (connected to negative end of the battery) to the Ground of Voltage Regulator (middle pin of voltage regulator).
Take one jumper wire and insert one end of the wire to the output pin of Voltage Regulator which provides 5 Volt regulated output and other end of that wire to first row in the upper part of the breadboard, so that each hole up to five slots of that row have 5 volt supply.
Take another jumper wire and insert it to the column where negative of battery is connected and other end of this wire to bottom row of breadboard so that each hole in that row up to five slots will have a negative power supply.
Insert a 220ohm resistor (Red Red Brown Gold ) into the breadboard in such a way one end will be connected to the regulated output on the top row of breadboard and other end will be connected to positive terminal of LED through a jumper wire as shown in figure.
Insert the first switch into the breadboard.
Connect the top or bottom side pin of the switch to LED’s negative terminal and make another connection from top or bottom pin of the switch on the opposite side to the negative terminal of the power supply on the breadboard.
Insert similar number of Resistors, LED’s and switches and repeat the same step above.
Press the first switch and the first LED glow and in a similar way if we press both switches then two LEDs will glow.