Reclocking, where to begin?

[Shike]

Hi everyone.

Currently I'm using an Auzentech X-Fi Prelude and an Entech 205.2 DAC. I've heard a lot of discussion in regards to reclocking and am taking interest in it. There's a few questions I have that hopefully some can answer:

1) Where is a good crash course for learning about clocking? I read up on TNTs articles but am somewhat unsure of how it all comes together.

2) Would it be more beneficial to reclock the soundcard or my DAC?

3) Should I be looking at the kwak clock circuit, or a prebuilt from Tent/Net Audio/etc? Is there a substantial performance difference so to speak?

Thanks for your time