Resources

Create3D Instructions and Kit Listings

Other Links

RepRap Project - This is where it's all happening
Prusa Mendel Repository - Standard kit in OpenSCAD format
RepRap Blog Aggregator - Read this for latest news of RepRap world!
ThingiVerse - Public object sharing site, look here first for anything including my things!

Toolchain

3D Modellers:

OpenSCAD - 3D modelling for programmers - Construct objects from geometric primitives by writing code rather than drawing with mouse.
Blender - an advanced and capable open source mesh modeller. See also Rab3D's Blender Precision Modelling Tutorial
FreeCad
HeeksCAD

Slicers

Convert 3D model to layered gcode toolpath

Slic3r - Start with this one
SFACT - Simplified skeinforge.
SkeinForge - All the knobs and dials
E3D - Super fast, nowhere near as many features as sfact and skeinforge.
WebSkein - Incomplete.

Senders:

Send layered gcode toolpath to printer.

Printrun - includes the fabulous Pronterface.
Printrun+SFACT packaged for windows. Start with this one.

Firmware:

Install on printer, converts gcode toolpath to stepper pulses and heater control

Sprinter - The tried+true favourite. Start with this one.
Marlin - has move blending for smoother+faster corners
Teacup - Pioneered many techniques, less popular than Sprinter or Marlin
SJFW - Numerous experimental features, pushing the envelope.
Matt Roberts' Firmware - First to implement Extruder Advance, an important algorithm for high speed printing

Australian Parts Suppliers

AusXMods - Get your stepper motors and drivers here - specifically 5xNEMA17 62oz.in motor, and 4xA4983 carrier
OzBot
Little Bird Electronics - Supplies the slightly more robust A4988 carrier board ("pololu")
EMakerShop - not strictly an Australian site, but many Australian RepRappers sell their parts here