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.
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.
Zotero allows you to save and organize citations for books, articles, and other materials to your own personal library. Zotero can automatically save citations from catalogs and databases, or you can manually add information for special items.
The Craft of Research by 