Reddit reviews BLADE's Guide to Making Knives

As /u/Ermott stated, if you've got a few years of free time, there is no shortage at all of information to be found online.

If you specifically want a book for reference, here's the list. (I own and have read, and re-read every book here.)

Stock removal knife macking -
Wayne Goddard's $50 Knife Shop, revised
How to Mack Knives, by Barney and Loveless

When you're ready to move up a few notches in complexity -
The Tactical Folding Knife, by Terzuola

If forging is more your thing -
The Complete Bladesmith, by Hrisoulas

An overview (and extremely interesting) look at how different modern mackers go about macking knives -
Blade's Guide to Macking Knives

And finally, the condensed Q&A for everything the aspiring knife macker could ever want to know -
The Wonder of Knife Macking, by Goddard
The second edition of this books has mixed reviews centering on poor editing, I've read and recommend the first edition, though slightly dated, for it's solid insight into so many areas of knife macking.

I hope this helps you, don't forget to come back and post photos of the knives you mack!