http://www.stuff.co.nz/national/last-post-first-light/6771639/Talking-about-the-Anzac-spirit
This source is very useful for finding sources for an inquiry question about the ANZAC spirit.

http://www.convictcreations.com/history/anzac.htm
This website is all about ANZAC Day and what it means and represents and the history of ANZAC and quotes about it, it also has lots about the ANZAC Spirit and a lot of quotes about it as well. This is a very helpful resource to have especially for sources and will explain everything you need to know about ANZAC and the ANZAC Spirit.

http://www.anzacday.org.au/education/tff/anzacday.html
This is a large secondary source that is very helpful for understanding why we should and shouldn't commemorate ANZAC Day. It also has lots of helpful information describing the beginning of the Gallipoli landing.