When taking notes and drawing diagrams on my iPad I always use smaller tips to get a more precise and clean look to my writing and drawings. I highly highly recommend these to anyone using iPads.
Apple Pencil Tip
notes
These notebooks are my go-to for writing my study notes. They have so many options such as: wide ruled, college ruled, grid paper, 1 subject, 2 subject, 3 subject, 5 subject, etc. and there is an app that helps you upload your notes digitally.
Notebooks | Five Star
App for 5 star notebooks to go with previous post.
Digital Notetaking | Five Star
These pens are perfect for all things. I personally love them when I take notes in class. They don’t smear and they dry quick. I have used many different ones they sell including red, blue, black, erasable, gel, etc. and they are my favourite!!
uniball | staples.ca
textbook
These are perfect for those days you just need to use the textbook and if you are anything like me then you like it to be neat in clean. These are the best alternative for using highlighters in the book.