Thanks for asking the question johnny; I was wondering about this a while back.
As for secondary - I'm still a noob at this (1st batch is in 2ndary and 2nd batch is in primary) but there's not really much to it:
1) Siphon your cider into a new sterilized container using whatever method you prefer.
2) When you start 2ndary is a matter of opinion and exactly what kind of cider you want to make, but generally when primary fermentation is completely done or "almost" done it's time. Depending on the temp, your preference (& patience :P), and other things, my research says this can be anywhere from day 8 to like 2.5 weeks or more.
3) Once you've siphoned into the new container, seal it up, pop a new airlock on, and you're done!
4) They say an S-shape airlock is better for secondary because it allows for better tracking of fermentation, and I would agree (granted I've only done secondary once!)
5) Duration of secondary also varies quite a bit depending on who you talk to - I've read recipes that say a couple days all the way out to 6 months, with a minimum 3 weeks being a common middle ground. I'm going about a month on my 1st batch, but just a few days on my 2nd batch, which is the "quickie" recipe you can find in the thread called "starting a simple cider" on this forum. Hoping to have it done by Christmas!
Anyway hope this helps; take it easy.