Blowjob help

So I’m seeing my boyfriend tonight and last time we met things started to get a little sexual for the first time. We took it slow and didn’t really do much. But since I’m staying over at his again tonight the same might happen and might go further (which we’re both happy with doing)

I’m very inexperienced when it comes to blowjobs, having only done it a couple times with one other person. So my boyfriend has a lot of foreskin and it completely covers his tip even when hard.

So my question is, what do I do with the foreskin during the blowjob? Like do I pull it back to uncover his tip or do I just leave it there?

Any help would be appreciated!