Sure, especially a reference book, and particularly if you already have overhand shuffles that you use and are effective for you. The book will be there for you if you do ever want to reference it's offering. For real beginners who have no repertoire of sleights and moves, it may be better to read and learn straight through.
I have to say though, in books that are compilations of works, I've gleaned a TON of tips and bonuses I'd have never learned had I not just cracked the book and read it front to back. The Collective Works of Alex Elmsley is a wealth of awesome, as are the Ed Marlo Revolutionary Card Technique and Cardially Yours books, both produced by Magic Inc. I find myself bookmarking and picking up where I left off in those books so as not to miss any gems, but I also hunt and pick from all my books I guess at one point or another, just depends on why I've picked up the book
TL/DR: nothing wrong at all with that, one can always come back to it later.
