The European Comission has published a series of guides on research ethics that you can read here:
- Ethics in Social Science and Humanities
- Ethics and data protection
- How to complete your ethics self-assessment
Furthermore, the Social Media Research: A Guide to Ethics contains very useful information for those interested in collecting data from social media. However, please note that this guide predates the General Data Protection Regulation.
Check out CIREP's presentation Getting your proposal ethics-ready for EU funding.