I have faced with a lot of different questions, where the problem is not very clear. To understand this problem I need to ask author do some steps. For example author has a problem with layout. And you start explaining what to do. In most situations the explanation is similar.
I thought that maybe I can create some blog post or create wiki post and give that link to author.
Does it make sense? If yes - please advice where to store such solutions? Do stackexchange has some resources for that purpose?