Bruce “Tog” Tognazzini’s list of First Principles of Interaction Design (Revised & Expanded) – AskTog.com
Nielsen Norman Group or NN/g post on 10 Usability Heuristics – nngroup.com
Treehouse brought out their own list of 10 User Interface Design Fundamentals.
How Usability Testing Drastically Improved My Client’s App is a study on usability testing and the improvements it led to, published on Smashing Magazine.
This Comprehensive Review of Usability and User Experience Testing Tools is also published on Smashing Magazine’s site.
A Comprehensive Matrix and Review of 14 Usability Testing Tools is a read on Useful Usability.
JDVorheis UI/UX Designer http://jdvorheis.me/graphics12.html
JD Vorheis – Moodboard for UI Design – Courtesy of: http://www.jdvorheis.me
Try pargavi.com for examples by UX Designer Pargavi Velmurugan who was trained at Art University, San Francisco
On wireframes: look at this blog: Wireframes
Also a valuable read (in French) by Francois Chaillot: Veille Digitale and Zoning, Storyboard, Wireframe, Prototypage, Moodboard, UI Design
User Interface Design Basics is a post at usability.gov
Typographic Design Patterns and Current Practices is a comparison of the use of Sans Serif and Serif fonts on Smashing Magazine.
Dive Into Typography on HackDesign is a broad and interactive resource on typography.
Other interesting searches and resources: