Since Strategy natively support OData (10.5) with authentication (10.6), it is quite easy and straightforward to setup. Less easy is to understand how C4C API works and how to use them.
Here are some usefull links you might want to keep if you ever need to do this:
When you have your Query URL built, just start Data Import --> File from URL --> paste your Query URL and setup authentication.
Then, just build your dashboard like you're used to.
Screenshot #1 : C4C APIs listing

Screenshot #2 : Sample dashboard built directly on top of C4C
