What are some good manners/social etiquette?

[u/oknoneed]

I’ve always had a bit of a rough personality. I was homeless for six years living on a beach during Covid; and I lost touch with society. My gawkiness is very apparent. Is there any quick social rules or common courtesy that I could attain?

[u/RkeCouplesTherapist]

This is super basic, but I think saying hello, please, and thank you, can go a long way.