It's fine. I've never developed any app for iOS and Android before, so a more detailed guide will be really helpful. However, I find developing Cordova app for iOS much easier than for Android :)
My main concern regarding the iOS guide was that it first tells you to download Apache Cordova via a link that actually points to PhoneGap page, without any explanation that PhoneGap is (at least for now) just a distribution of Cordova. In the next section it tells you to "Download Cordova source", though you've just downloaded Cordova/PhoneGap in the previous step. Then at the very end of the next section, it tells you that "Starting with Cordova 2.2, the project will have a copy of CordovaLib within it (...)" These are the parts that I wanted to clarify.