I’d say this forum is one of the best resources if you have specific questions: https://forum.bigfix.com
If you want to see examples of custom content for BigFix, this is one of the best options: https://bigfix.me/
This is the primary documentation for BigFix: IBM Documentation
See this forum post for a very large list of BigFix resources: BigFix Documentation & Resources
If there isn’t any BigFix experience in the company, I would probably start by creating an eval server that you would never actually put into production or put many clients into it. Use it to get more comfortable with the tool before trying to stand up a production service.
- How many endpoints do you expect to have total?
- How many IT staff will have access to BigFix?