Non-commercial research and private study
You are allowed to take short extracts of works when the use is for research that you do not make any money from or for private study, for educational courses or even for use in connection with a hobby. Such use is only permitted when it is 'fair dealing' (discussed below).
The purpose of this exception is to provide students and non-commercial researchers more access to copyright works. In assessing whether your use of the work is permitted or not you must assess if there is any financial impact on the copyright owner because of your use. Where the impact is not significant, the use may be acceptable.
If your use is for non-commercial research you must ensure that the work you reproduce is supported by a sufficient acknowledgment.