Headlights, driving lights, fog lights
School me on the purpose of each, benefits, and potential brands to purchase.
The first question you want to ask yourself, is why do you want additional lights. Do you want to because they look cool (okay, who doesn't), or are you going to use them for something specific?
Next, IMHO you want to prioritize how you'll use them. Most people upgrade their existing lights, because the factory lighting for the JK is great, if you only use them in your garage. My recommendations for the upgrading the factory lights are Sylvania's Silverstar or Ultra OEM headlight bulb replacements, as they upgrade the temperature of the lights to the brighter, whiter, light, that helps you on the road. Same for the fog lights, except I believe I used PIAA's OEM bulb replacements, and they provided the same upgrade to the fogs...
Now, onto the additional lights that you may decide to add to your rig. Most of the time, you can opt for two different "types" of supplemental lighting. Driving lights, or fog lights... In the infamous words of Tony Montana (Scarface), most people rarely get stuck in a "swamp", so fog lights usually do not come in as handy as additional driving lights do. That isn't to say they do not help, as they provide much lower, wider, coverage, while driving lights provide higher, farther, coverage.
Mounting locations include front bumpers (either factory or aftermarket), and/or the popular windshield mounts, using brackets from KC Lights and other manufacturers, that will allow you to mount the aftermarket lights to the bottom corners of your A-Pillars, near your windshield.
Finally, switching and controls. The JK uses a factory CANbus system. While this may be greek to many people, in short, it is a complicated, yet intricate type of electrical system, that is "smart" and works and reacts based measuring loads and voltages throughout the system. I am, by no means an electrical engineer, but suffice it to say it is a good system, but a bit harder to incorporate aftermarket accessories without being concious of how it works. There is one wire behing the dash panel, that can be accessed to use as a 12V "trigger" wire, that many people utilize for lights, accessories, and the like. Aside from that, it becomes hairy. This is where I think the next suggestion will come in handy. If you know you want to install lights, and perhaps other accessories (CB, Winch, On-Board Air, Rock Lights, etc.), then you'll need a solution that will address the wiring, support, and management of these accessories. The sPOD is an electrical management system that allows the JK owner to install a very safe, secure, independent, electrical management unit, to your JK, without the hassle and risk of tampering with your factory JK electrical wiring. The sPOD is a well-engineered solution, that includes a switch bezel and control unit (and can include a gauge for on-board air), a source, which houses all of the relays, control board, and low-voltage cut-off protection, and a circuit breaker, to ensure that if there ever is a short, or a problem, you have a safety net not to fry anything on your rig. Think of the sPOD as an "electrical backbone" for your rig, that you install before you install any accessories, making your life so much easier, and allowing you to sleep at night, knowing your wiring isn't going to turn your JK into a BBQ overnight! Plus, John the owner of sPOD is a stand-up guy, very knowledgeable, and provides great support on the installation of your sPOD, along with recommendations on other areas of your rig!
I've sketched some broad strokes for you, but maybe this will help you have a basic understanding, and perhaps open your post up for others to jump in and lend an opinion or two...
Good luck, and post or PM me if you have any other questions.