So here in 2013, we can't really make our own laptops, so we buy them. Then comes the question; What am I looking for?
General Use
Laptops are currently the most convenient way to have all your files, documents, and "papers" neatly organized in a small space. Most people get them for office and home use. Here's what you should do/not do.
CPU
If you don't know what a CPU is, click here
If all you're doing is Microsoft Word and writing emails, you won't need a whole lot of power in terms of CPU, so the most you'll ever need is a 1.5GHz to a 2.8GHz CPU.
RAM
If you don't know what RAM is, click here
When looking at a laptop's specs online, you'll probably see something like "DDR3 4GB RAM" or something close to that.
DDR3 is almost non-relevant to someone who isn't too fancy with computers. Just make sure it's not DDR2. That may be a bit too old for today's general use standards.
As for amount of RAM, 4GB is a good amount for emailing, but if you're doing things like photoshop, 8GB might be better.
Weight
Most non-gaming laptops are around 3lbs to 6lbs, so keep that in mind if you're going to be running around an airport or something.
Gaming
Gaming on a laptop can be difficult, overheating, not enough power, battery life, and most of all, portability. That's the point of gaming on a laptop, right?
CPU
If you're going Intel, look for a i5 or above. If AMD, go for a A10 or a Phenom. Aim for 2.9GHz or more. Higher is better, but might kill your wallet.
RAM
8GB should be your minimum for running games. More is better, but not necessary.
Portability
DO NOT expect your gaming laptop to be light, unless you're getting a Razer Blade.
Gaming laptops usually have a larger heatsink and fan configuration to efficiently cool the excess heat given off the GPU and other components.
6.5lbs is a realistic weight for most gaming laptops, just don't expect to be carrying feathers while in transit.