I'm a therapist with self-harm scars

I am a Residential Therapist and a recent graduate. And I have concern about how to address my self-harm scars to my clients.

I have considered surgery for the major scars and tattoos for the minor scars. Looking for insight from others in the professional or helping field.

Books explaining tattoos, piercings, and other body modification

My husband and I both have tattoos, and our son is just used to them. He likes fake tattoos (he gives them to himself and us with markers, and he also likes the rub-on kind), and is amused by our body decoration, but doesn't really seem to care either way. I'm sure at some point he'll ask why some people have tattoos, piercings, and so on and others don't, so it's cool to know these books exist.