I'm taking a communication class at my local college, but there are a ton of resources through blogs, youtube, coursera, etc.
A lot of them are focused more for corporate leadership, emotion intelligence, etc. but lots of good resources - https://www.coursera.org/lecture/emotional-intelligence-in-leadership/interpersonal-relationships-DTbGB
https://www.coursera.org/learn/wharton-communication-skills
https://www.coursera.org/learn/social-psychology
https://www.coursera.org/specializations/conflict-management
https://www.coursera.org/learn/human-needs
https://www.coursera.org/lecture/communicationtheory-academia-practice/defining-interpersonal-communication-4v06W
Good luck hope they help.