Gaetano,
Glad to hear you have an interest in JFBConnect. The next major release is planned to have a much more simplified (and module) API interface. We're also planning Instagram authentication for Q2 of this year, but we likely won't be having anything like what you're mentioning.
If you're interested in doing a deep integration, I'd probably recommend really waiting until later in February when the next major release is out (and we have some free time and may be able to give more pointers and help).
As for inserting the buttons, currently, you can use the following 'tag' in the page:
The next release will have a much better way to implement the social buttons when implementing them inside another extension that won't require parsing out tags like the above.
I hope that helps answer some of your questions, but if you have more specifics you're looking for, just let me know.
Thanks,
Alex