So, you're finally ready to take that big-step into “techie-hood”, you're excited about your first life-changing journey that all die-hard techies must take in their own time: you're building a computer. Sounds daunting, doesn't it? I mean, you have to select all the hardware, do all the research, make sure you can afford your machine, and then you have to build the damn thing! Oh, and I don't even want to get into what happens after that, when you actually turn on your creation. But, you wanna know something? It's worth it.
If you aren't freaked out by the stress-test that's above, then today is your lucky day. You're about to get some first-hand advice on building your very own computer, this is very important for those of you who haven't been knee-deep in hardware before. So pay attention!

The most important thing you should do when building any computer, whether it's your first, second, or whatever, is seriously ask yourself this question: what will it be used for? Will this one be a daily-driven internet browser, word processor? Will it be a hardcore gaming rig, or Lanparty box, or maybe a multi-media editing machine? Each build uses a variety of balance between power-usage, capability, and cost; knowing what you're going for will make the next few steps easier, since you have a concept at hand.
One thing about the cost: stick to a budget. A computer can be built for as little as a few hundred bucks, and some rigs can exceed a $10k price-tag. The important thing to remember is that you spend what you can afford. A basic-gaming build shouldn't cost too much more than $800, an internet browser or word processor should be half of that; however, you can always build something greater at a higher cost, but keep everything in perspective to what is affordable to you.
The best thing you can do if you're building for the first time is educate yourself. Use a handful of tech-blogs to learn about different components, and check professional reviews on the products you are considering for your machine. Some of my favorites are TomsHardware.com and AnandTech.com.
Building a computer is rarely a relaxing experience, and it won't be if it's your first time. If you're new to this then you might as well face it now: something will go wrong. The best thing you can do in the event of a problem is to be prepared: become a regular-visitor to technology-centered forums, ask any questions you might have, and look for advice from other builders. You aren't the first person to build one of these things, and there's plenty of help out there that most people are willing to share if you ask. Even better: if you have a friend, peer, or co-worker that has some building experience, ask them to help you out personally. Having someone like them overlooking your shoulder while you build is a great way to avoid problems you may experience down the line.

Computers are becoming more central to our lives with each passing generation; eventually, they'll be a part of us in the physical-sense. Recently, I've read an article that previewed a new technology: viewing screens built into our contact lenses. Freaky, isn't it? Building one is a great way to learn more about these machines, and it's an excellent skill to have later down the road. Think of it this way: at least you'll be ready for the great android uprising of 2050.