The Design of Everyday Things - A timeless book, The Design of Everyday Things explores the fundamentalprinciples behind all design, and how to understand the psychology behind how we use things, and why they frustrate us.
FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
The Elements of Typographic Style - The primary form of communication on the web is through text which makes typography one of the most important aspects to design for.
Octopus.do - Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.
CS50x - HarvardX (edX) - An introduction to the intellectual enterprises of computer science and the art of programming.
DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.