For those of you just starting out, I would definitely recommend reading at least one book. Trust me, you will need the information dealing with all the how-to's, different stages, trouble shooting, etc. My two favorites were ECSimplified (Andrea Olsen) and The Diaper Free Baby (Christine Le-Gross) for just good practical information for just starting out. ECSimplified is more expensive but comes with access to a private forum where the author answers your questions directly. Laurie Bouke's Infant Potty Training is good, though much longer, but has fascinating information about EC around the world in different cultures. I don't recommend much Diaper-Free! (Ingrid Bauer) for just starting out; it's what I read first and it seemed totally impractical and gave me false expectations about what I could really accomplish but without much detail on how to get there. The author tells her own story of never using diapers and almost never getting peed on! She seemed psychic to me. Anyway, info gained from forums, blogs, etc., though helpful, just won't be enough!
Also, diaper-free time when you're starting out is absolutely essential for establishing babies natural timing and signals. With non-mobile babies, you just lay them on some old towels or other waterproof or absorbent material. Of course, it's much more difficult with a mobile baby, but you can try to block off non-carpeted areas of the house or try outside. You watch closely, it helps to keep a log of when by our baby pees/poops with respect to eating/nursing and sleeping. And try to observe what they do just before eliminating. This tells you how often to offer the potty and what signals to look for when baby needs to pee or poop. Cueing sounds helps them establish the association between the sound and eliminating, then they will know to eliminate when they hear the sound and eventually they recognize the position. It's just behavioral conditioning (aka Pavlov's dog). You'd be surprised how fast a tiny baby will pick up on the cue. With older babies, you can just use words.
Good luck!