A little lost and confused

It sounds ridiculous to all of you experienced girlies, but. Okay I'm 20 years old and I still haven't seen a dick. To be fair, I have seen a dick, if you count all the times I walked into my parents room as a child and accidentally witnessed my dad's "creepy pee pee". Yeah, I was young. And now I'm an adult and still haven't seen a dick other than my dad's. There's this boy I like at school but I'm too shy to talk to him. At this point I don't even care who's dick I experience with. Also, how do I give a blowjob? Any advice helps. Ty