The Blockly library adds an editor to your app that represents coding concepts as interlocking blocks. It outputs syntactically correct code in the language of your choice. Custom blocks may be created to connect to your own application.
For Ages: Kindergarten – Grade 8
Topic: programming, networking and security

Unplugged is a collection of free learning activities that teach Computer Science through engaging games and puzzles that use cards, string, crayons and lots of running around.
For Ages: Kindergarten – Grade 12
Topic: programming, networking and security

SecurityTube has videos, a newsletter and forums to learn the latest in security.
For Ages: Grade 7 – Adult
Topic: security

Girls Go CyberStart is a fun and interactive series of digital challenges designed to introduce you to the field of cybersecurity.
For Ages: Grade 9 – Grade 12
Topic: cybersecurity, forensics, cryptography

Hack This Site is a free training ground for users to test and expand their hacking skills.
For Ages: High School – Adult
Topic: security

A digital library that hosts a diverse collection of cybersecurity Learning Objects
For Ages: Grade 11 – Adult
Topic: cyber security

The NICE tutorials are instructional webinars that are tailored to provide information to a wide audience about the variety of cybersecurity education and workplace development-related topics.
For Ages: Grade 12 and above
Topic: instructional webinars

This site has free lessons for teaching kids about cybersecurity.
For Ages: Teachers
Topic: security

Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom.
For Ages: Kindergarten – Grade 12
Topic: programming

With Scratch, you can program your own interactive stories, games, and animations — and share your creations with others in the online community.
For Ages: Kindergarten – Grade 12
Topic: programming

Blackgirlscode aims to increase the number of women of color in the digital space by empowering them to become innovators in STEM fields, leaders in their communities, and builders of their own futures through exposure to computer science and technology.
For Ages: Grade 2 – Grade 12
Topic: programming

The Raspberry Pi Foundation works to increase the number of people who can understand and shape the technological world by giving the power of digital making to all the people.
For Ages: Grade 5 and above
Topic: programming

Do you feel you need step-by-step videos to help you learn to code?  Check out the Code Player.
For Ages: Grade 7 – Adult
Topic: programming

Code wars helps you learn coding by challenging you. You solve one challenge at a time (aka kata) and master other skills. 
For Ages: Grade 7 – Adult
Topic: programming

This site highlights current exploits and mitigations.
For Ages: High School – Adult
Topic: programming

Join a supportive community of millions of coders, building projects and earn free certificates, or get experience by coding for nonprofits. 
For Ages: High School – Adult
Topic: programming

Coursea brings the best courses in the world together in one site.  Become specialized in python, bitcoin technologies, neural networks and more!
For Ages: High School – Adult
Topic: programming

More info coming.
For Ages: High School – Adult
Topic: programming

UDACITY has several nano degrees that let you learn a skill in the tech field. Several courses are free, however there are many paid options as well.
For Ages: High School – Adult
Topic: programming

Codecademy.org aims to create a good place for learners to engage! They take cues from Facebook and Zynga to create an engaging educational experience.
For Ages: Grade 12 and above
Topic: programming

introtopython.org is a resource for anyone who is looking to learn Python as their first programming language. introtopython.org also helps educators to view their curriculum and use it with their students.
For Ages: Grade 12 and above
Topic: programming