All schools are different regarding computer requirements and how info is relayed to students. Computer requirements need to be verified from each school. Regarding notes- this will vary. Some schools issue texts and notes while others just ppts, pdf, etc. And you fill in all extras. Some schools have classes which share notes. Others - you are on your own. For me, I always took notes on the computer to save paper and to be able to always have my notes with me. I had a plain HP laptop. I bought a tablet adapter to make my notes - not as good as a tablet, but still did the job. I liked labeling and making notes on the ppt diagrams and photos. Since almost all lectures were ppt or pdf, this came in handy for me.
My suggestion for you is find out the requirement of your school and find out from current students how much note taking is needed. This should help you figure out what you will need. Remember, we all are different and not everyone learns the same way. Consider that as well.