Inkscape for various operating systems can be downloaded here
Documentation:
User Documentation - official Inkscape program documentation Inkscape: Guide to a Vector Drawing Program - an online book (more than just a manual, but always up to date) Quick Guide to Inkscape - a concise yet sufficiently clear Inkscape manual (a must see)Tutorials:
Inkscape tutorials blog - "a big list of cool inkscape tutorials..." (that says it all) Back to School: 28 Easy Inkscape Tutorials - a few simple guides 50 Tutorials For Creating Vector Graphics Using Free Software Inkscape Video Tutorials:
Inkscape tutorials for the novice artist - more than a hundred excellent video tutorialsMiscellaneous:
Go Inkscape - guides, tutorials, instructions... Open Clip Art Library - need a ready-made object for your graphics? All are free - just find it. Contribute yours as well.