See below for a list of suppliers and learning resources. Anything missing? These lists are maintained on Github where anyone can add or edit this list – see contributing for more information.

Suppliers

Electronics

Supplier More information Ships Internationally
http://www.sparkfun.com/ US-based Yes
https://www.adafruit.com/ US-based Yes
https://littlebirdelectronics.com.au/ Australia-based No
http://www.ebay.com/ Worldwide Depends on seller
https://thepihut.com/ UK-based Yes
https://shop.pimoroni.com/ UK-based Yes
https://www.modmypi.com/ UK-based Yes

3D Printing

Supplier More information Ships Internationally
http://3d-print.com.au Based in New Zealand No - only Australia and New Zealand
https://i.materialise.com/ US-based Yes
https://www.sculpteo.com/en/ US-based Yes
https://www.ponoko.com/ US-based Yes

Learning

Electronics

Resource Description
https://www.raspberrypi.org/ From the creators of the Raspberry Pi, lots of information and links to various resources, communities, D etc.
https://www.arduino.cc/ Homepage for the Arduino micro-controller with lots of learning resources and information.
https://learn.sparkfun.com/tutorials Sparkfun are an online electronics supplier but they also provide excellent tutorials on all things electronics from the basics (circuits, soldering etc) up to robot building.
https://learn.adafruit.com/ Another electronics supplier that provide excellent tutorials on a range of electronics topics.
https://learn.pimoroni.com/ And another

3D printing

Resource Description
https://www.tinkercad.com/learn/ Tinkercad is a wonderfully simply and easy to use online CAD editor that you can use to create 3D models for printing. They have a stack of short tutorials that help you to quickly get up to speed using their webware.
http://www.autodesk.com/ Tinkercad was created by a company called Autodesk who also provide excellent desktop CAD software. There's much more of a learning curve here than tinkercad so if you're new to 3D modelling stick with Tinkercad.
http://www.sketchup.com/ SketchUp is another good CAD program, but again there's quite a learning curve you've got to get through before diving into anything too complex.

Plant Physiology

Resource Description
http://prometheuswiki.publish.csiro.au/ Great online resource for protocols in measuring a range of plant ecophysiology

Contribute

Help improve these resources by contributing to the project.

Contributing
Group

Creating animated GIFs using ImageJ

Read article All articles
eucryphia-leaf-2 Play

Eucryphia lucida leaf 2
Captured by Jen Peters from Western Sydney University visiting the Brodribb Lab in Hobart.