i would check the craft section there's a whole lot of info there on patterns and sources.
i have teh LTK (little turtle knits) soaker and longies pattern and since i only knit every once in a while find it very easy to follow. i made a preemie size soaker for my dd (which still fits except i had to stretch the thighs out as she's a bit chunky there) and i'm working on finishing a pair of longies sized newborn. i'm hoping those will still fit
I second the LTK patterns, they are very well written with a lot of sizes. I have the longies pattern, the ribby wrap pattern, and the ribby soaker pattern -- have made them all and really like them all. Her longie pattern is one of my favorites the shaping is really nice through the bum and front.