Hey
1) This year I stayed at home and commuted and I absolutely HATED it. I felt like I missed out on all the first year halls experience and missed out on a lot of the social life. So I definitely recommend moving out if you can afford it.
2) Which course is it that you want to do? Search your course into google? There's always answers on google. Or you'll just have to go through the websites of the universities you are interested in and see if they do the course you would like to do.
3) I believe a lot of universities provide tours for those who aren't able to make open days on a day that is suitable for both of you. Other than that, you're best reading up about the university and reading as many reviews as possible from the students. But I believe it is important to visit the university before you make your choice because you really need to get a feel for the place.
4) That's the thing, sometimes you don't know. Again you should try and attend the open days because they give talks about most of the courses and therefore you will get a feel for what the course is like and if it is suitable for you. There is also a curriculum break-down on most of the university websites for each of the courses. And if you choose a course, are in it for a few weeks and decide it isn't for you, then not to worry, a lot of universities allow you to change into another course as long as it isn't full.
5) Again, by reading up on the courses you are interested in or attending open day talks. You can always email the university and usually the head of the specific department you'd be studying within will email you back and help with any queries you may have.
6)
If you live in the UK then you can get roughly £4500 on a student loan without it being income-assessed. Yes you can get a job to help, I have worked in Boots throughout studying at university and it works just fine. Plus the extra cash is good because first year is full of partying, partying and more partying.
7) My main advice would just be; move out, make sure you visit the university before choosing it, and don't stress out about it
Hope this helped!