CS Education (Tools for Teaching Programming & CS)

• http://code.org

Self-Teaching

• http://girldevelopit.com/materials (Development 101, HTML/CSS, Javascript, PHP, Ruby/Rails, Python, Android)
• http://www.codecademy.com (Javascript, HTML/CSS, PHP, Python, Ruby, APIs)
• https://www.codeschool.com (Ruby, Javascript, HTML/CSS, iOS)
• https://techprep.fb.com/ (Misc Resources -- Targetted at self-learners and family members looking to support them)

A/V Programming

• http://earsketch.gatech.edu
• GATech Media Computation

Visual Programming

• Light Bot 2.0
• Alice 3.0
• Greenfoot
• Scratch
• SNAP/BYOB
• PencilCode

Python

• http://interactivepython.org

Ruby

• Kids Ruby
• "Try Ruby":http://tryruby.org
• "Ruby Warrior":https://www.bloc.io/ruby-warrior

Robotics

• EggBot: Egg-painting "printer".

Domain Specific

• "Pop!World":http://popworld15.appspot.com (Evolutionary Biology)
• http://cs.canisius.edu/~hertzm/wnycsta/ (Little Assignment for Big Data)
• https://picoctf.com (Crypto / Sigint)
• http://setosa.io/ev/ (Math Explained Visually)

GIS

• "Continental Divide":http://blogs.mathworks.com/steve/2009/04/24/continental-divide-1-intro/
• "BoundlessGeo":http://workshops.boundlessgeo.com
• mjolnir:/local2/software/postgis.ova

Data Sources

• "US-Census Data":http://www.census.gov/geo/maps-data/
• "OpenStreetMap":http://planet.openstreetmap.org

Challenges

• "Project Euler":https://projecteuler.net/problems
• "HackerRank":https://www.hackerrank.com
• "LeetCode":http://oj.leetcode.com/problems/
• "Crypto Challenges":http://www.matasano.com/articles/crypto-challenges/
• "Python Challenge":http://pythonchallenge.com/