Includes more than 1,000 books, reference works, journal articles, and instructional videos by world-leading academics from across the social sciences. Qualitative and quantitative methods and more. The site is designed to guide users to the content they need to learn a little or a lot about their method. Includes some useful and interesting videos, cases, and other interesting stuff. Books are DRM-free so you can download chapters. Books are also cataloged in Search It.

"NCRM has an extensive library of online resources for learners, researchers and educators. These resources include a large collection of online tutorials, plus podcasts, videos and the NCRM EPrints publications database, which contains more than 3,000 items."

The WSU Libraries has many research methods-related resources.

A starting point for other books on lit reviews

This is an open educational resource.
"Psychology, like most other sciences, has its own set of tools to investigate the important research questions of its field. Unlike other sciences that are older and more mature, psychology is a relatively new field and, like an adolescent, is learning and changing rapidly. Psychology researchers are learning and changing along with the emerging science. This textbook introduces students to the fundamental principles of what it is like to think like a psychology researcher in the contemporary world of psychology research"