What can be achieved in 10 Weeks?

I was interested to read the account of waht one guy managed to achieve in 10 weeks: created a website, narrated a book and got someone in India to type it; used Facebook, YouTube, Twitter and the like to promote it; Got 12,232 downloads who all joined his marketing list - all for free; asked those 12,232 what they wanted to learn; 1600 wanted to learn how to buy and sell businesses; created a seminar; shot some videos; sold 100 spots at £5k a head; recorded the seminar and turned it into a home study program; asked other people if they were interested to learn how he did that - they said yes, so he created a coaching programme over 12 months to teach them...

..I don't know what the quality was like, but it's an impressive achievement.