19 yo inexperienced

I am a 19 yo girl , I have never wanted to be sexual until I met my boyfriend. We met online we saw each other for the first time, and I became a sexual beast , all I wanted was to be sexual, and everything was soo different and every touch felt amplified, he touched my clit for a second and I came, unfortunately I was super loud. He said he lasts less that 5 minutes but when masturbating that night he took like 10/15 and I came twice in that time .

Now I'm insecure that I don't know what I'm doing, and I want him to ask if he can put his finger in me , but I'm scared , because I never touched it there , nor have I used a tampon. Can someone help me ? Like tell me how it feels , or how to be more sexual towards him.