advice, opinions, and tips?

So I'm 18 and still a virgin. I recently started dating this guy who I really like and maybe in the future he'll be my first. He's been with a few girls sexually but I'm his first girlfriend. He's really sweet and caring. He makes me extremely happy.
We've fooled around a bit but neither of us has orgasmed. I'm a little insecure about not being good at hand jobs, blow jobs, or sex in general. Do you have any advice or tips?