Defining "social conservatism" is an issue that requires a broader context. Also, you cannot take a legitimate stand, for or against, something you claim to know nothing about without learning about it in a larger context.

Although it became popular to distinguish social conservatism from political conservatism in the late 1900s, I think you may be better served in first working to understand the history of modern conservatism as a whole. You can start by learning about the historical origin of modern conservatism as a response to the French Revolution. Edmund Burke's "Reflections on The French Revolution" is important to the legacy of modern conservatism and is a good read. Burkean conservatism has been significant in the history of American conservatism (assuming you are in the U.S.). If you want to know how social, or any other type of conservatism, affected U.S. history, this is a good place to begin learning.

A complete tracing of conservatism, including its modern history, may be found here:

https://plato.stanford.edu/entries/conservatism/

This resource also details various criticisms of conservatism.