Dude, no need to be embarrassed. I can guarantee you are not the only one in that boat. Im 34 and still haven’t had partnered sex so I’m in that club as well.
This is a really great place to ask questions. People are very friendly, helpful and unjudgmental. Its Really helped me a lot.
Welcome to the forum 
theres a ton of great threads on here. Having a wade through them is a good place to start
(We had a couple of super threads about oral the other day, they are definetly worth a look
How to get a female partner to orgasm
Labia attention in oral
And this is also a fantastic thread that it really worth a read dispite its length
Prostate orgasms)