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Reference
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Newark
AVR Freaks
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Fritzing Web Site
http://fritzing.org/
http://fritzing.org/projects/
http://fritzing.org/download/
Programming References
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Cprogramming.com Tutorials
Sparkfun Beginning Embedded Electronics
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KTOWN's Guide to Readable C Code
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Adafruit NeoPixel Überguide
iAccelerometer, Gyro and IMU Buying Guide
Arduino Buying Guide
Overview for MSP430 Ultra-Low Power 16-bit MCUs
Getting Started with Arduino
Atmel AVR 8-bit and 32-bit Microcontrollers
AVR GUIDE
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Radio Electronics