I've been repairing my phones and computers for years—I don't like being at the mercy of hardware vendors, especially when there's a sea of original and gray market replacement parts out there to be had. Upgrades? Same thing. While companies like Microsoft and Apple are making it almost impossible to tinker with the toys they make, it feels good to know that I can still at least install a fresh battery or increase the size of an old laptop's on board storage for hundreds less than it would cost me were I to take it into one of their repair centers. As I plopped a replacement battery into my 2012 11" MacBook Air earlier this week. I found my self feeling a lot of gratitude for the folks who talk me the fundamentals of puttering about with electronics. However, I know that not everyone has access to folks that can help them learn the skills they need in order to diagnose or correct a problem with their laptop, game console or other devices. This can make getting started with repairing you gear feel pretty intimidating.
You can get around this intimidation in a couple of ways. You can, if you're lucky enough to have one where you live visit a repair cafe or other similar business. They have the tools and instructions you'll need in order to learn how to do it yourself. And of course, there's the Interwebz. You'll find no end of videos that suggest how to tinker out a technical problem. But before you jump into farting around with an expensive piece of gear, it's good to have a strong grasp of how to use the tools that you'll need to get the job done. Videos, like this one from iFixit on how to use a multi-meter, are a great place to start.