Thanks to UlT1MaT3 for the work put into this tutorial.

In this tutorial you will learn how to make fire like candles burn and give off light, a light to flicker, and to make a Strobe light!

Open your map you have already made if not make a room with four walls and a ground and roof. now first if you want to make fire flickering you must find a fire texture maybe your own.

Now you must select your light and press "n" and then in "key" style the style of appearance the light gives off. now in "value" 3 which is the candle! and now you will have a candle type light which should flicker like fire, and here is how to do the rest of these lights

"style" 0 Normal
"style" 1 FLICKER (first variety)
"style" 2 SLOW STRONG PULSE (BRIGHT)
"style" 3 Candle (first variety)
"style" 4 Fast Strobe (strobe Light)
"style" 5 Gentle Pulse 1
"style" 6 Flicker (second Variety)
"style" 7 CANDLE (second variety)
"style" 8 CANDLE (third variety)
"style" 9 SLOW STROBE (fourth variety)
"style" 10 FLUORESCENT FLICKER
"style" 11 SLOW PULSE NOT FADE TO BLACK
"style" 12 FAST PULSE
"style" 13 Test Blending

and to add colors to your light select your light and then press "k" which will if you want to flicker put "key" style "Value" 6 and then you should have your color value and say red then your red light will flicker!

You want to beable to make your light position o­n a certain spot of your map, so first you must press "n" to open entities window and then find light and put in "key" target - the targetname of the info_null the light is pointing to "value" l1

and then find the section you want to add the light, so now select what else you want it and then press "n" o­n the section you want the light to shine o­n and then put in "key" targetname and in "value" l1 and then you

hope this helps!