I'm planning to share a case-study of my client's site to a LinkedIn group... so is this direct promotion of website or helping the community as per group guidelines? And where I can share that page? In promotions or in discussions? Please help me.
I think you should join the education related groups and discussion on that, i think that is beneficial for you.
I think sharing a related information is fine... if it helps contributors to gain some extra knowledge out of it.
Case studies are shared on Linked in communities all the time. That’s their purpose: to help users understand how to solve some issues and to discuss about it. Also, I think that if your case study is really good, you could share it in discussions and in promotions too. I am sure you want to generate some talks about it and I think you surely want as much people as possible to read it. Good luck!
I think Linkedin is great for Networking I've heard from many people, that it's a great way for landing jobs and career opportunities
Case study is always welcome by LinkedIn.It depends on how you write case study.No need of direct promotion.I think posting you case study in discussion section is much better.
The best ting for you friend just to join related group which type of case study you want to discuss and raise your questions and discuss with group member, it's best way to solve case study.