Free book on Cognitive Productivity

I have a gift for someone interested in cognitive productivity. To get it, you just have to click on this link that has the built-in coupon. If you decide to go for it, lemme know. it would be nice to compare notes.

1 Like

The coupon didn’t work for me: the slider only goes down to 14.99 USD.

Since the author offered two free copies to me, I’d just email you one if you gimme your address.

Email via holtzermann17@gmail.com — thanks!