You are not being foolish with your questions. How are you going to learn about what goes on with expectant mothers if you don't ask questions?
As for morning sickness, it is different for each expectant mother. The one tried and true help for it is a cup of hot tea and soda crackers. Oh, and removing the offensive item causing the nausea or removing the mom to be helps too. I remember being nauseous over scents and visual items like someone eating a sloppy sandwich, lol. Just be supportive and she'll appreciate it.
Your idea about making a list of things you know you could do and letting your friend pick a few things she would feel that would be most useful/helpful, is terrific! From what I have read here, you are a great person and a wonderful friend to your friend. Go ahead and make the list. There is a lot of good information here as well as suggestions that you can use for your list. Let us know what she picks from your list.