There are a number of ways that you can use content without infringing copyright.
You need to consider:
- what type of material you are using;
- what type of a copying you want to do, such as scanning, photocopying, adapting, performing;
- what the purpose of your copying is, such as private study, teaching, non-commercial or commercial research;
- and, what proportion of the original work you want to use.
If you are in any doubt, do not copy!
A copyright owner may use a licence to indicate how a work can be used for free or without permission. Check the licence to see what is permitted. Creative Commons licences are one type of licence.