In a distant time Jim Halprin was considered one of the very best graders alive (pre
TPG comapnies) he even tried his hand at starting his own
TPG (NCI and NCI Photoproof). New England Coin Galleries always had some of the nicest coins around when I started in numismatics. After Steve Ivy convinced Jim to leave NEG for Steve Ivy rare coins and team up doing coin auctions, they formed a little company called Heritage. Needless to say he did okay for himself.
The book is quite out of date, though worth having in a library if you collect coin books like I do, it should be found cheap, I paid under a dollar for my copy. It's a book that is outdated and I find relegated to the storage unit over the past several years.
That aside, the foundations Jim imparts throughout this book are all very true today and it's a book worth reading at least once. It does give good solid insights on grading from the mind of one of the best ever.
There are many books on grading, Photograde is still the standard for circulated
US coinage and superseded by the PCGS website of the same name for free.
"The Official Guide to Coin Grading and
Counterfeit Detection" is a much more current book, in it's second edition, though I prefer the 1st edition myself.
The Official
ANA guide to grading
US coins is the bible on the subject. Still nothing beats hands on mentoring and study - attend an
ANA Summer Seminar of two or three or even more on the subject. That is the single thing I attribute to me becoming the grader I am today. I attended 5 courses over the years specifically dedicated to
Counterfeit Detection and grading. The
ANA usually offers these courses in shorter 3 day or even 1 day seminars around the country to coincide with various
ANA coin shows, allowing those that can't travel to their headquarters in Colorado Springs. Worth looking into if you can.

"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013!
ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
See my want page:
http://goccf.com/t/140440