OWL has lots of general and subject-specific writing tips and techniques, along with research advice and detailed citation and formatting standards for the APA, MLA, and Chicago styles.
Try using a research log to keep track of what you've searched and what you want to try next. You can copy this to your Google Drive and adjust it to suit your needs.
SAGE Research Methods provides a comprehensive picture of research methods (quantitative, qualitative and mixed methods) across the social and behavioral sciences. It includes more than 100,000 pages of SAGE book and reference material on research methods as well as selected material from SAGE journals.
The Craft of Research by 
Salsa Dancing into the Social Sciences: Research in an Age of Info-Glut by