There are other good field guides out there as well: Sibley, National Geogrpahic, and more.
For list keeping, i do a Word document for listing species that I've seen; I do an Excel spreadsheet with Common Name, Scientific Name, Location(s), Date of First Sighting, Whether you captured it on camera, Identifying Mark 1 and Identifying Mark 2 (These two columns are the identifying marks that lead to the correct ID; for example, for Hairy Woodpecker, it could be Big Size, and large beak.), and two columns for the sex, "Male Seen?" and "Female Seen?".
Of course, other people have other ways of spreadsheeting their birds.