It doesn't really matter what edition you get as the procedures haven't changed in the last 50-years or so. I have the 4th edition of the ABCs (1980s) and it does just as good a job of teaching the basics as does the 2010 edition. Handloader magazine was first released in 1966. Its reloading articles contain the same procedures then as it does now.
The presses, powder measures, and dies also haven't changed much in that time. For example, a 2011 Dillon doesn't do a better job of reloading .45ACP than a Star (which the Dillons are based on) built in 1932. My 1930s era B&M powder measure does just as good a job as a new Harrell or Quick-Measure, and any quality dies made in the last century load just as accurate ammo as a set made last week.
What has changed are the components and specialized tools (tumblers, headspace gauges, etc) some find necessary.
Oh, and like my earlier post stated, I don't recommend getting that particular edition.
The basic reloading sections found in any component manual (Hornady, Lyman, Speer, and Sierra to name a few) have excellent chapters relating to learning the basics.
