I was going to post that article this morning but was kind of disappointed with it. There are some interesting N1-related websites out there that have a lot more information. All it took was a Google search.

The N1 failed because it proved too complicated. It had too many engines to synchronize properly and too many things to go wrong. It wouldn't surprise me if the N1 failures were what pushed the Russians to develop more powerful engines like the RD-170/171 used on the Energia strap-ons and Zenit booster. The RD-170 is rated at 806,000 kgf thrust. By comparison, the N1 used 30 NK-15 engines each producing under 150,000 kgf thrust at sea level. Had the RD-170 been available in the 1970s, only about 6 of them would've been needed to power the N1 first stage.

Here are some other N1 sites:

N1 Booster

N1 Image Clearinghouse

and of course, the site discussing the massive scale N1 model rocket flown last year.