If you only need a laptop for writing papers, taking notes, and surfing the web then a bottom of the line cheapo computer would probably be fine. Think of how the laptop will be used over the next several years and go from there. I used the cheapest computer all the way through my BSN. Go shopping and see what's available and within your budget. Check out amazon
and read some specs and reviews.
Now, if budget isn't an issue go for the big boys! I purchased a new laptop about the time I started working on my MSN. I bought every bit of computer that I could afford. It has the OS on a SSD and the startup time is amazing as is the CPU, GPU, and RAM. The screen is quite large as far as laptops go which I appreciate for multitasking. I LOVE IT!