Copyright protects:
Reference: Australian Copyright Council. Information Sheet G010v18: An Introduction to Copyright in Australia. Retrieved from http://www.copyright.org.au/
A reasonable portion is:
* eBooks: you should be able to copy at least a reasonable portion of an eBook; their terms of use may allow more, so check each one for the specific amount permitted. More information on how you can print, copy, or download from eBooks can be found in the Instructional Guide: eBooks.
Yes - under the following circumstances: