Renting? Shared Ownership?

Hey I know I keep going on about moving I’m just finding it hard and I don’t think my folks get it so I can’t really talk to them much. 
looking at renting isn’t really going great I’m just struggling with the whole concept. However it struck me today that rather then saving for a home and renting why don’t I do shared ownership. But then I don’t really know what that is where it would lead me and what happens so could someone please explain to me what shared ownership is? In simple terms because Google is confusing me and what the pros and cons are