Here is a dump of some of the interesting links that I have come across over the course of a year that I have not posted anything.
Search for something that you wanna learn and it gives you a list of all the links that you can refer to learn it.
This site gives you a quick introduction of any programming language or tool. I have referenced it from time to time to learn something new in a quick glance.
A catalog of all the free courses available online from top universities.
A book by Ryan Singer, a basecamp product strategist about Basecamp's process of building new things.
All-new HTML over the wire approach of building web applications, built for Hey.com.
A new approach to email by 37Signals.
Record visitors using your web application to learn and understand user behavior.
Explore open source rails projects, contribute to them or learn from them.