Second Susie's statement about always, always re-checking the recipe/lye amount yourself. I think Soaping 101 is also generally a pretty good source for new soapmakers, but was looking for a specific recipe for something, ran her's through soapcalc several times, and it was just wrong. I'm sure it was just a typo, which is unavoidable for all of us over time, but you want to make sure that something like that does not end up in a lye heavy soap or failure to saponify b/c you didn't check.
Also, even some of the best writers on soap make mistakes/are not always clear. I came across a statement in one that did not make sense to me when I first started soaping and posted a question about it on another board. The author, who is one of the acknowledged experts and a good writer, is a member of that board and was nice enough to post and explain/clarify.
That is one of the reasons I like posting questions/researching here rather than reading books, you get more than one voice on a topic that is unclear, usually many if it is something that is dangerous. It just helps to have so much advice, some of it the most clear-headed and expert that you could expect to find anywhere.