RAM, also called simply "memory," is an important part of your computer, but it's also somewhat misunderstood. As a quick explanation, think of RAM like a dining room table and your computer's hard drive like the kitchen. You prepare your food in the kitchen and then move it to the table so it's easier to get to your plate and eventually your stomach. In the same way, RAM holds information your computer thinks it's going to need soon so you don't spend a lot of time waiting around for the slower hard drive to get it.
Having too little RAM is like a dining room table that can't hold all the food you want, so you keep having to run to the kitchen for more and swapping dishes around. Adding more RAM is like getting a bigger table. So, could your computer use more RAM?
It's likely. Until recently when the prices on RAM went through the floor, manufacturers only put in enough for your computer to run well, but not as well as it could. In the past, we've pegged adding more RAM as a way to cheaply upgrade an older computer.
At a minimum, you want 4GB of RAM, and 8GB would be better. Quickly find out how much RAM your computer has with Speccy. If you bought a computer in the recent past that could use more RAM, Amazon is having a great deal you should know about.
You can get 8GB kits for as little as $30, and 16GB for $53. Of course, 16GB is a bit of overkill unless you're editing video or doing computer animation.
Note that the kits that Amazon has for sale are DDR3 RAM. If you have an older computer, it might require DDR2 or DDR, so make sure you know what your computer takes before buying. Get instructions on finding out what RAM your computer needs, and how to install the new RAM when you get it.
In addition to RAM, Amazon is also selling SD memory cards and flash drives for dirt cheap, including a 128GB Lexard for $44. There's also a Crucial 240GB solid-state drive available for $54. Learn the benefits of adding an SSD to your computer.