[Utah-astronomy] Author Alvin Huey new free downloadable observing guides

Picked this up from CloudySkies, that Alvin Huey has made a series of observing guides for free download at http://www.faintfuzzies.com/DownloadableObservingGuides.htm . Some are for large apertures objects. The guides look interesting, though some of the guides are a ways off for the likes of me right now. I like the planetary nebula one. I'd like to know your thoughts on them. Thanks.