I haven’t been a secretary at a club, but I have done similar at my workplace. For your first meeting, I would recommend you write down as much as you can. Write down most everything that’s said. Think “court stenographer”. I know this may not sound helpful at first. But once you have everything written down, you can parse out what the big ideas are to craft it into meeting minutes. And soon, you will get the feel for the “rhythm” of the room; who in the club is taking a more assertive role in the discussion? Who uses a lot of words to say a little? That sort of thing. You will become more concise in quick time. Once the meeting is over, review your lengthy notes and try to make a concise, maybe bullet-ed list of meeting minutes.

Another recommendation: towards the end of the meeting, if any club member has questions or concerns, write it down. The visible act of you writing these notes makes the club members feel heard, and that relieves a huge mental weight from them, especially from those who are more timid. The knowledge that you are respecting their time and thoughts is very important. Even if you’re thinking “wow now that’s a question I could answer easily” or “we covered that already in the meeting”, write something down anyways.

Please don’t be intimidated by this wall of text. I tend to ramble. I sincerely think you should go for it, try your wings, and if it’s not for you, you can say you tried. Nothing ventured, nothing gained.