Arduino Create - a site for learning and sharing project ideas

Plant monitoring system

Learn Adafruit - lots of creative ideas

Arduino forum - includes topics such as e-textiles, Lilypads, Floras, LEDs, electronics, code, etc

Arduinos via distance video-lessons - USQ and St Finbarr's at Quilpie

Arduino Tutorials on Youtube

Arduino Series

Arduino Workshop for Beginners Videos from Core-electronics

Microbit - Micro:bit by BBC - Robust technology with visual programming suitable for the classroom. No need for soldering.