I've never had a wet dream.
I don't think that any of the generalized ways of approaching the subject of puberty work because it's different for everyone. Maybe you should read
this just so that you aren't surprised by anything.
But I really do that that you should be much more concerned with ensuring that the relationship between you two is founded upon open and honest communication. As long as it is then tackling the issue of puberty should come much easier than you'd imagine.