Sex for the first time

So my boyfriend and i are going to both be having sex for the first time soon.

Any tips/ advice? I've given him a blowjob a couple times and he's played with me a little but other than that there's been no "full contact" if you get what i mean.

We're both new at this so if any of you guys could go back to your first time and wish you could have some knowledge to tell yourself what would it be?

Thank you in advance! (Btw I'm 23 and he's 24 we've just been waiting to find the right person and we agree we have)