“Steve Jobs,” the official biography of the late Apple co-founder and CEO, went on sale today. and it has debuted as a number one best-seller, reports the “San Jose Business Journal” (http://macte.ch/bKb5o).

The book, authored by by Walter Issacson, is now shipping from Simon & Schuster. The book is available through several retailers including Apple’s iBookstore, Amazon.com and Audible.com.

An estimate of how many copies were sold won’t be known for about a week but “Steve Jobs” topped the best-seller lists for Amazon’s Kindle and Barnes & Noble’s Nook reader, notes the “Business Journal.” It also was number one on the “Top Paid” books on Apple’s iTunes.