* Design Mockup Tools<p>In the past I used Keynote for its simplicity, now I prefer Sketch. It&#x27;s nice to be able to preview your designs on your mobile devices. These apps are for Mac only though.<p>* Books<p>One book I would recommend on design is &quot;The Design of Everyday Things&quot;. You&#x27;ll learn a few useful things about design in general.<p>Another book I&#x27;m reading right now is &quot;The Process of Creating Life&quot;. I cannot recommend it yet as I haven&#x27;t finished it, so I&#x27;m just mentioning it. This book might seem like an odd choice at first since it&#x27;s from the architecture shelf, but it has some interesting ideas nonetheless.<p>One thing to mention is that the topic for both of these books is not digital design, yet I would argue that the knowledge learned from them is transferable to the digital realm.