If he's been in long-term relationships before he'll probably help with furthering your relationship. Just enjoy spending time together, and things will just progress naturally. And talk to each other! Talking can solve many problems that may emerge!
Edit: As for the worrying that you won't be good enough for him, initially I used to wonder why my bf fancied me and was worried that he'd dump me, but you've just got to be confident that he must like you quite a lot to go out with you. The biggest turn-off is if you get clingy and keep saying you don't think you're good enough for him, because then he might start to think you aren't good enough. Mm, haven't explained that well at all. But you get what I mean? Inner confidence will show through and it will make him like you even more.