Ironically, JaysTwoCents just released a new video about overclocking again today. It's updated with the latest Afterburner software, which is free to use by the way. Afterburner is an MSI product, but it will work for any brand GPU card. Other solutions are out there, but as you pointed out they are typically more difficult to understand and use, which is why MSI's software is pretty much the standard. Keep in mind that some cards will see a much more dramatic result from overclocking than others, depending on the underlying architecture, the number of cores, and fan setup. Blower style graphics cards (like Nvidia's Founders Edition cards) are typically the worst at thermal control, but usually have the best clock speeds, while 3rd party like EVGA, Gigabyte, MSI usually have a much better fan design and open chassis to keep the card running cooler than Founder's Edition style cards. Here's a link to the latest video explaining how to use it in-depth:

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