Shooting lightning can seem very daunting at times, but with the right equipment and technique it easy.

Equipment
DSLR with a bulb setting  this is somethings its own setting, like on my 5d, on its in the manual setting like my xt rebel.
Sturdy Tripiod
Remote Shutter Release .  You don’t have to use the name brand one, I bought mine of ebay for like $8
When Raining
A Rain Sleeve for the camera
Rain gear for your self

Technique

First off understand bulb mode.
Bulb mode is where the shutter is open as long as you are holding the shutter release and you choose the aperture.
When selecting an aperture pay attention to how close the lightning is.  The further way the lightning the bigger the aperture you wan, the closer it is a smaller aperture you want.  I usually just start at f/4 then adjust from there.  After you set the aperture press in the shutter release and lock it until you see lightning, after lightning is finished release it.  Now this is where you are going to have to be patient it may take some time but you will capture a good one.  If you don’t see any lightning for like a minute or so just release it and try again.

If you dont have a remote it’s possible to do it with out but defiantly harder .  Just set in on manual. But on a long shutter speed like 15″ or 30″ and close down that aperture. Just keep shooting until you capture something.

Make sure to pay attention to your surroundings, the lightning is not the whole pic.
Which one is more interesting the one by the house or the one with reflection in the water? 

Hope you have fun trying this out and be safe.