Rootstech allows free access to On Demand Library
Rootstech.org Without signing in click the hour glass search to access: Search the On-Demand Library -- familysearch wiki
https://www.familysearch.org/en/rootstech/session/familysearch-wiki-what-you-need-to-know
This will give you an overview of the FamilySearch Wiki and recommend more advanced use of the wiki.
1