Much of my librarianship Centered around evidence synthesis (rigorous systematic and scoping reviews). Read my journal article about Solo ES services.
I created an evidence synthesis workshop series for social science researchers. You can check it out on youtube.
also check out the massive accompanying libguide that brings together all the tools for social science researchers interested in doing systematic or scoping reviews.

Image credit: Image sourced from the Public Domain Image Archive / Wellcome Collection. Public Domain.