Social Research Methodology

For a good overview of qualitative methods applicable in a range of fields including education visit Qualitative Research in Information Systems.   Other useful sites provide information on Grounded Theory,  Conducting Focus Groups and Ethnography.  For a bibliography on medical ethics, much of which is relevant to education, visit Ethical Issues in Research Involving Human Participants.  If  you're interested in case study research, visit Research Methods Resources on the WWW: case study research.  

If Action Research is your area of interest, the Collaborative Action Research Network (CARN) site provides details of current leading edge developments in the field through the conference proceedings of the network. 

For help on making sense of quantitative methods try the Tutorial on Survey Research by Professor Varun Grover.