First of all there is no 6 hours oc. It's either 24/7 stable or not. Sure there's bench ocs that might last a few hours, but that's not what you should be going for. With a bench oc you can just rerun the benchmark until it finishes before it crashes. Rerunning an official or cast? Much more difficult.

What part of the guide did you get stuck on though?

Sandy Bridge is extremely easy to overclock. You shouldn't touch the BCLK anyway, no straps for now, ring bus/cache is synced to the core so you've only got one voltage and multiplier that matter. Later you can change the other voltages a bit for stability and power consumption/temps, but up until you get to that point where you can start tweaking the oc it's literally two settings.

up multiplier, increase voltage if it crashes????

How do I know what my max frequency is? In post #3 the guide says 1.7v will kill my CPU so am I looking to just go as high as I can without going over 1.5v? What temperature should I stay under when testing for stability?

Also on my ASUS Motherboard there's an option for "Ai Overclock Tuner" that I can set to XMP. Is that preferred vs. manual? It looks like this: http://www.gamespot.com/images/1300-2601313

I'm pretty sure starting at the highest Voltage that won't immediately kill the CPU is not how you get a "mild overclock".

There is no definite "max frequency" and it's trial and error. I can't tell what it'll be on your CPU.
Temps depend on the test, some are more intense than others. As long as it never starts throttling (e.g. AIDA64 shows that), which starts in the high 90s (°C of course), you'll be fine.

Manual, always manual.

Start by going for something reasonable. See if you can get 4.4 stable.
Change the voltage in small increments, don't start at 1.5V, start with 1.3V and 25mV=0.025V increments.
Go up if it crashes, down if it doesn't. Test at least half an hour with whatever you want (Prime95, AIDA64, linpack/LinX, IBT, x264 stresstest, whatever floats your boat). Watch for thermal throttling, if it's throttling the test doesn't count. You'll either have to up the fan speed or use a lower voltage (which probably means a lower clockrate as well).
When the behaviour changes after a step, if you went up and it crashed every time and now it doesn't, or if you went down and it didn't and now it does, change direction and use smaller increments (10mV). Repeat once more if you want (5mV). Depending on which direction your were going on the last step use the last/first voltage that it wasn't crashing with. This is your preliminary voltage. No, you're not done yet.

That should take you a while. If you have to go above 1.4V for 4.4GHz you are probably doing something wrong or other voltages need tweaking.

Either way it's time to move to more specific tests to figure that out, but I'll post that in a few days when you actually need it.

sweet thanks setsul