LinkedIn integration - best practise

Site URL: https://peterbjerg.dk

I would like some tips and advice on setting up a Squarcespace  site for best  possible basic LinkedIn integration. 

For example: 

- How to make blog post also "automatically" appear on LinkedIn, do I manually control which blogposts also post on LinkedIn? (similar to the facebook option) 

- How to make sure blog image layout/format looks correct on LinkedIn

- What text will be posted on LInkedin, the full text? or my summary text? 

- And how can I share the other way around, ie. from LinkedIn to the squarespace site?

IMPORTANT Its for a client for whom I make a squarespace 7.1 site. I cant really test it with her LInkedIn account. 

But I can test it with my own site (that is the older version of squarespace). Does it make a difference if its the older type or 7.1?