Looking for information? Here's some great online resources on a ton of different topics:
Want to learn more about anatomy? This article gives an overview of sexual anatomy including and beyond the penis and vagina. Did you know the brain is one of the most important sexual organs?
This article talks about overcoming shame and stigma about having sex - it's a good read if you're struggling with similar feelings.
Not sure how to bring up that you'd like your partner to get tested for STIs? Planned Parenthood has some tips.
Nervous about telling your partner you have an STI? This article can help you out.