I don't see the point in waiting for the right girl. It's very unlikely you go on to achieve the fairytale of marrying the first girl you do any of that with. At least make the first time good for you, whoever it's with.
possibly, you can both explore together but then if she isn't a virgin it really needn't be a big deal. If someone cares about you they're not gonna care whether or not you not know exactly what to do and when to do it and anyway there are no hard (excuse the punn) rules. It's up to the individuals and it will be different for everyone with every partner. To much pressure is put on men to perform anyway. Like I said before just chill and enjoy yourself, if the girl cares about you she'll want you to enjoy yourself too
13!!! I think i was still in the "Girls? Euuurrgghh!" stage at 13!