Your Cart

    Is this your street address?


    ···· ···· ···· 4242
    Test card



    Use a different card?


    pp paypal

    or pay with

    We do not keep any of your sensitive credit card information on file with us unless you ask us to after this purchase is complete.

    or pay with

    Please confirm your location:

    Your purchase was successful!

    We charged your card and sent you a receipt

      Gumroad Library

      Download from the App Store or text yourself a link to the app

      Adam Tuttle

      Adam is on a journey from being an engineer to being a CTO, and sharing his thoughts, experiences, and lessons learned along the way. New emails every Tuesday.

      Because email is the new old RSS again, right?

      Powered by Gumroad