Her parents would kill me if that happened x.x

Yeah, you're only a year older than me, and the thought of having a baby in a year just sounds way too soon for me! But a condom should be fine, as long as you put it on properly, and I think that you can get ones with spermicide, which I'd recommend. However, I've heard that putting on more than one condom is not a good idea, as the friction from them rubbing against each other can break them.

Hmm. This is fairly simple. Don't make a big deal out of it. Less experienced people tend to make a big deal out of having sex for the first time or in general and they tend to underestimate how much experienced people desire sex. So the time you two get into a situation where she wants sex, kiss her, do some foreplay to work her up, stick a jimmy on it and go at a pace she likes.  She likely won't cum so she'll just wait til you cum but make sure you don't cum too early. 

Since you have a muted sex drive, you'll likely have to figure out what turns you on and fetishes you have by exposing yourself to the porn world regardless if you want to jerk off or not. Think of it as studying if you got to. The important thing is that you learn what you turns you on and if it's not too bad (haha) , you can convince your spouse to do what turns you on. It would help make sex for yourself and your partner to be more enjoyable. It would also make you desire sex more. 

I dunno, I just hear that Republican sex is boring.

If I ever have sex with a Republican I'll tell you if its boring or not

Will do

EXPOSED  

As the opposite end of the spectrum, it is interesting to read this.

To prepare, just lead up to it. Maybe you will find your sexuality, maybe you won't. But obviously trying will help you find out. There are lots of different strategies as well, so you might have to keep at it for awhile.

As for condoms, I recommend trying it out before. And if they don't fit then you will need to find the right size. A bad condom will also destroy sex drive.

Also it is nice that both of you are virgins, so both of you can experiment together :).

You really don't have to worry about the condom too much. As long if you buy Durex and there isn't a tear, the chances to get her pregnant are extremely low.
Also don't forget to check the expiry date.

You literally can't fuck this up; just do what makes you and her comfortable and don't worry about the rest.

We all go through this, sooner or later, so it's totally normal.

To be yourself is all that you can do.