I currently have a black and white laser printer. I need my PDF documents to be colour printed and make notes on them.
Should I get a colour laser printer or should I get a surface pro or a laptop?
I was told one note is pretty good for making notes?
First off you'll have to see whether you like hardcopy notes that you print and/or annotate or whether you prefer digital copies. Each has their pros and cons and at the end of the day it comes to personal preference about what helps you study better.
If you prefer hardcopy a colour printer would be the best bet. If you prefer digital it'd be between the Surface and a laptop. Again, it comes down to personal preference (provided you don't need amazing specs on either so a 256GB SSD with an i5 + 8GB RAM on either a Surface or laptop should suffice for general browsing + note taking + movies or anything else you'll do with it and can last you 4-5 years if you take good care of it). Have a look at the weight/feel of the keyboard etc. in person and go for what you prefer the most.