Help me talk to my teenage Lesbian daughter about safe sex and dating

My daughter is a 15 year old, sexually active lesbian (she has been out for a while I am supportive). She came to me and said her school health class had taught them about heterosexual sex but not lesbian sex and she doesn’t know what to do and what the risks for various STIs are etc. I realized I was someone who grew up Xennial straight and educated about safe sex for heterosexual sex and then making out with girls in college never going all the way and never even thinking that there could be unsafe lesbian sex. So I looked up some stuff online and then we talked again and that resulted in her asking if I could help her buy dental dams. What else can I do? We read about stuff online but are there better resources than others?