Just to clarify, all bitesize was trying to say is that while we can advise you on things like communication and where to find further information, and provide reassurance from personal experiences, we can't give specific advice on sexual techniques. Breaches the Code of Conduct I'm afraid. We have members as young as 13 and some thing you just don't need to know about at 13.
Anyway, while I can't comment on this specifically I would echo what has been said about communicating with your boyfriend and preparing as you see fit - as long as you do both, it should work out fine. It's always a learning experience so don't worry if you get things wrong to start with, you'll get there in time.